Solar 4G Security Camera vs Wired CCTV: Complete Comparison Guide [2026]

Last updated: 3 September 2026 · SolaGuard Research Team · Written for procurement teams, importers and system integrators

In one paragraph: On an eight-camera, 600-metre perimeter, wired PoE CCTV costs about USD 9,240 over five years and solar 4G costs about USD 3,490 — roughly 62 percent lower, and 89 percent lower on day-one capital. The gap is not created by the cameras. It is created by the trench. But that verdict flips on a compact, building-mounted site: with every camera inside 60 metres and no digging, wired comes out about USD 390 cheaper. Below is the full model, every assumption itemised so you can substitute your own trenching rate and SIM tariff and re-run it.

The comparison that actually matters is not solar versus mains

Most "solar vs wired" articles compare the wrong things — battery life against uninterrupted power, or wireless convenience against cable reliability. Those are real differences, but they are not where the money is.

The money is in distance. A wired camera is only as cheap as the trench that reaches it. Every metre between the equipment room and the camera position costs you roughly USD 9 in excavation, ducting and cable before anyone has bought a camera. A solar 4G camera costs the same whether it is 5 metres or 5 kilometres from the nearest building, because it carries its own power source and its own network.

That single asymmetry explains nearly every finding in this guide. It also explains why the question "we already have electricity, so why solar?" — a question we see constantly from farm and ranch buyers — usually has a counter-intuitive answer. Having grid power on site barely changes the cost of a wired camera at the far fence line, because you were never going to pay for the electricity. You were going to pay for the 400 metres of ground between the meter and the gate.

What each technology actually is

A wired CCTV system is a set of IP cameras connected by Cat6 to a PoE switch or PoE NVR in an equipment room. One cable carries both power and data. Recording is centralised on the NVR's hard disks. Practical ceiling: 100 metres of copper per run before you need a PoE extender, a fibre leg with media converters, or a local power spur.

A solar 4G camera is a self-contained node: photovoltaic panel, lithium battery, low-power camera SoC, 4G LTE modem with its own SIM, and a microSD card for local recording. It has no infrastructure dependency of any kind. You mount it, you aim the panel, you scan a QR code. Install time is 5 to 10 minutes per camera against several days of civil works for the wired equivalent — which is why "solar CCTV camera installation" is barely a discipline compared with structured cabling.

Feature comparison: solar 4G versus wired PoE

Dimension	Solar 4G LTE	Wired PoE CCTV	Practical implication
Power source	8 W or 15 W panel + 8000–20000 mAh battery	Grid via PoE, 100 m copper limit	Solar is unaffected by outages and by distance
Network	4G LTE, per-camera SIM	Ethernet to NVR / site LAN	Solar works before site IT exists
Civil works	None	Trench, duct, backfill, reinstatement	The dominant cost line on any spread-out site
Install time per camera	5–10 minutes	Hours, plus shared trench time	Solar can be redeployed in a morning
Recording	Local microSD up to 128 GB standard	Central NVR, 4 TB+ arrays	Wired wins on retention depth
Retention at 2K continuous	~10–14 days per 128 GB card	Months, limited by disk budget	Specify retention needs before you choose
Resolution (stock catalogue)	1080p–2K; 4K custom/OEM only	2K–4K widely available	Wired wins where forensic detail is contractual
Recurring cost	SIM data ~USD 4/camera/month	Grid power ~USD 8/camera/year	The main structural cost of going solar
Single point of failure	None — each node is independent	NVR, switch, and every trench line	One backhoe can end a wired system
Surge / lightning exposure	Minimal — no long copper runs	High on rural long runs; needs earthing	A real failure mode in tropical storm belts
Weatherproofing	IP66 on outdoor models	IP66/IP67 depending on model	Comparable; install quality decides outcomes
Theft of the camera itself	Higher — visible, self-contained	Lower — tethered, harder to remove	Mount high, use anti-tamper brackets
Scaling cost per extra camera	Flat	Rises with distance	Decides which technology wins at scale

The five-year total cost of ownership model

This is the section this page exists for. Everything below is arithmetic on stated inputs, not a vendor claim. Where a number is a market assumption rather than a SolaGuard specification, it is labelled as such. Replace any input with your own local rate and the conclusion will move accordingly — that is the point.

The modelled site

Eight cameras securing a roughly 600-metre perimeter — a mid-size farm, a fenced construction compound, a materials yard or a rural warehouse plot. There is an equipment room with mains power. The farthest camera position sits about 140 metres from it. Three of the eight runs exceed 100 metres of copper. Currency is USD. All figures are five-year, and the wired side is given every fair advantage: PoE means no separate mains spurs, and the camera price used is at the low end of the outdoor PoE market.

Inputs and assumptions

Input	Value used	Source / note
Trenching + backfill	USD 8.00 / metre	Market assumption — the single most variable input. Machine-dug rural ground in Vietnam and Latin America commonly runs USD 4–12/m; hard surface reinstatement runs far higher.
Outdoor Cat6 + connectors	USD 0.55 / metre	Market assumption
Conduit, duct, junction boxes	USD 0.80 / metre	Market assumption
Outdoor PoE camera, 2 MP	USD 60 each	Market assumption (distributor band USD 55–90)
8-channel PoE NVR + 4 TB disk	USD 350	Market assumption
PoE extender + enclosure, runs >100 m	USD 180 × 3	Market assumption
Surge protection + earthing per run	USD 25 × 8	Market assumption; mandatory in storm belts
Low-voltage install labour, wired	USD 70 / camera	Market assumption, regional rate
Grid electricity	USD 0.09 / kWh	≈ Vietnamese commercial tariff
Wired system continuous draw	81 W (8 × 7 W + 25 W NVR/switch)	Engineering estimate
Solar camera	Quoted per order	SG-D42G-10F66-V5; dealer tiers cut 20–30%
Pole + bracket where no structure exists	USD 35 × 8	Market assumption
128 GB microSD	USD 12 × 8	Market assumption
Solar install labour	USD 15 / camera	5–10 min per camera plus pole setting
4G data	USD 4 / camera / month	M2M tariff assumption — see the data-usage section
Battery service, year 4	USD 15 / camera	Ageing reserve
Site visits (panel clean, firmware, SD check)	USD 60 × 2 per year	Whole-fleet visit, not per camera
Wired maintenance reserve	USD 220 / year	Cable faults, rodent damage, surge replacement

Five-year totals

Line item	Wired PoE CCTV	Solar 4G
Cameras (8)	USD 480	USD 336
NVR + storage	USD 350	— (local microSD)
microSD cards (8 × 128 GB)	—	USD 96
Cable (750 m incl. slack)	USD 413	—
Conduit, duct, boxes (600 m)	USD 480	—
Trenching (600 m @ USD 8)	USD 4,800	USD 0
PoE extenders for runs >100 m (3)	USD 540	—
Surge protection + earthing (8)	USD 200	—
Poles and brackets (8)	—	USD 280
Installation labour	USD 560	USD 120
Capital subtotal	USD 7,823	USD 832
Grid electricity, 5 years (709 kWh/yr)	USD 319	USD 0
4G SIM data, 5 years	USD 0	USD 1,920
Battery service, year 4	—	USD 120
Maintenance / site visits, 5 years	USD 1,100	USD 600
Five-year total	USD 9,242	USD 3,472
Per camera, five years	USD 1,155	USD 434
Per camera, per year	USD 231	USD 87

Result: solar 4G is USD 5,770 cheaper over five years — 62 percent lower total, and 89 percent lower on the capital you have to release before the system protects anything. For an importer or integrator quoting a project, that capital gap is often more decisive than the five-year figure, because it is what the end client actually has to finance.

Sensitivity: what changes the answer

Scenario changed from baseline	Wired 5-yr	Solar 5-yr	Winner
Baseline (600 m trench @ USD 8/m, SIM USD 4/mo)	USD 9,242	USD 3,472	Solar by 62%
Cheap machine trenching at USD 4/m	USD 6,842	USD 3,472	Solar by 49%
Expensive SIM at USD 8/camera/month	USD 9,242	USD 5,392	Solar by 42%
Cheap M2M SIM at USD 2/camera/month	USD 9,242	USD 2,512	Solar by 73%
Dealer tier −20% on cameras (10+ units)	USD 9,242	USD 3,405	Solar by 63%
Compact site: no trenching, surface conduit, all runs <60 m	USD 3,105	USD 3,472	Wired by 11%

The last row is the honest one, and we would rather you read it here than discover it after buying. If the cameras all bolt to existing walls within 60 metres of the equipment room, and surface conduit is acceptable, wired CCTV is cheaper over five years and gives you far deeper retention as well. Solar 4G is not a universal upgrade. It is a specific answer to distance, absent infrastructure, and deployments that have to move.

The marginal-camera test

The clearest way to size a project is to ask what the next camera costs. This is where wired budgets quietly fail.

Adding one more camera 80 m beyond the current run	Wired	Solar 4G
Camera	USD 60	USD 42
Cable + conduit	USD 119	—
Trench, 80 m	USD 640	—
Pole / bracket / microSD	—	USD 47
Labour	USD 70	USD 15
5-yr connectivity	Included	USD 240
Marginal 5-yr cost	≈ USD 889	≈ USD 344

Wired scales with geography. Solar scales with unit count. On a 50-camera site spread over hectares, that difference compounds into six figures.

Power engineering: can a panel really run a camera 24/7?

Yes, if the panel and battery are sized for the duty cycle and the local climate — and no, if they are not. This is the part of the specification most buyers skip, so here is the arithmetic. These are engineering estimates using the stated derates, not guaranteed outputs.

Harvest

Ho Chi Minh City averages roughly 4.5 peak sun hours per day annually. Apply a real-world derate of 0.7 for panel tilt, dust, partial shading, and charge-controller and battery round-trip losses:

8 W panel: 8 × 4.5 × 0.7 ≈ 25 Wh per day
15 W panel: 15 × 4.5 × 0.7 ≈ 47 Wh per day

Load

An AOV camera holds roughly 0.4–0.7 W in low-power continuous recording and rises to 2–3.5 W during 4G transmission, AI processing bursts and infrared or white-light illumination. A representative daily profile — continuous recording, around 20 event uploads, half an hour of live viewing and a normal night on IR — lands at 18–24 Wh per day. Heavy use, with frequent live streaming and the white spotlight triggering often, reaches 30–38 Wh per day.

What that means for specification

An 8 W / 8000 mAh unit (about 29.6 Wh of storage) harvests 25 Wh against an 18–24 Wh load. It works in normal weather, with roughly 1.2 to 1.5 days of autonomy in the dark. A 15 W / 20000 mAh unit (about 74 Wh) harvests 47 Wh against the same load — roughly double the surplus and three to four days of autonomy.

Now apply the monsoon. In the southern Vietnamese wet season, effective peak sun hours can fall to 2.5–3.5 for extended runs. At 3 hours, an 8 W panel yields about 17 Wh per day, which is below the load — the camera runs a daily deficit and eventually drops into low-battery sleep. The 15 W panel yields about 31 Wh and stays in surplus.

Specification rule: 8 W / 8000 mAh is correct for dry-season-dominant climates, well-lit mounting positions and event-weighted duty. For year-round 24/7 AOV in a monsoon or high-cloud region, or where the mounting point gets less than about five hours of direct sun, specify 15 W / 20000 mAh — for example the SG-D42G-15F66-V7. That step up buys the difference between a camera that works and a camera that works in August.

Storage and retention: microSD versus an NVR

This is the dimension on which wired genuinely wins, and it deserves a straight answer.

A 2K stream in H.265 on a low-motion scene runs around 1 Mbps, which is roughly 0.45 GB per hour, or about 10.8 GB per day of continuous recording. A 128 GB microSD card therefore holds roughly 10 to 14 days of continuous 2K footage before it loops. Configure the camera for event-priority recording and the same card covers 45 to 90 days of clips.

A wired NVR with a 4 TB disk on eight channels holds around 45 to 50 days continuous at the same bitrate, and scales to months by adding disks. If your insurer, your customs authority or your contract requires 90 days of continuous retention on every channel, wired is the straightforward answer — or a solar deployment with cloud archiving and a correspondingly larger data budget.

Note that 128 GB is the standard ceiling on our stock models; larger cards are a custom-order item, not something to assume. Anyone quoting you 512 GB out of a stock catalogue is describing a product they have not shipped.

4G versus WiFi: the backhaul decision

Once you remove the Ethernet cable, the camera still needs a network, and the choice between 4G and WiFi is more consequential than most buyers expect.

	4G LTE	Site WiFi
Works from day one	Yes	Only after IT is commissioned
Range from infrastructure	Carrier coverage — kilometres	30–80 m outdoors, less through structures
Fails when…	Carrier outage, no signal in valleys/metal sheds	Router reboot, breaker trip, password change, someone unplugs the AP
Recurring cost	~USD 4/camera/month	USD 0 incremental
Who controls it	You, per camera	Whoever runs the site network
Redeployable	Yes — move the camera, done	Only inside the same coverage envelope

On construction sites the deciding factor is sequencing. Theft risk starts the day materials arrive; the site office, its power and its router usually arrive weeks later. A WiFi camera cannot protect a compound that has no router yet. That is the whole argument for choosing 4G over WiFi on a jobsite, and it is why 4G dominates temporary and phased deployments.

WiFi is the right answer inside a building you control — offices, warehouse interiors, hotel corridors — where mains sockets and an existing access point are already there. For those positions, mains-powered 4G-plus-WiFi models such as the SG-E42G-T66-V1 (10x zoom PTZ with auto-tracking) give you dual connectivity and unlimited power, without pretending to be a perimeter product.

How much mobile data will each camera actually use?

This is the most common budgeting question we get, and the most common source of quote shock, so here is the derivation rather than a number.

The camera records continuously to its own microSD card. The SIM is not carrying the recording — it carries only what leaves the camera:

Keepalive, status and push notifications: 0.3–0.6 GB per month
Event clips: 30 clips per day × 15 seconds at 2 Mbps ≈ 112 MB/day ≈ 3.4 GB per month
Live viewing: 10 minutes per day on a 1 Mbps sub-stream ≈ 75 MB/day ≈ 2.3 GB per month

Typical total: 5–10 GB per camera per month. Heavy remote viewing of 30+ minutes daily on the main stream takes it to 15–25 GB.

Three levers control this bill in practice. Buy an M2M or IoT tariff, not a consumer SIM — the per-GB price is usually a fraction, and pooled plans let quiet cameras subsidise busy ones. Set the mobile app to open the sub-stream by default, since most of the overage we see comes from staff idling on the HD live view. And tune AI detection so the camera uploads clips of humans and vehicles, not of every branch moving — false triggers cost data twice, once in transmission and once in the attention of whoever reviews them.

AOV versus PIR: continuous recording without a cable

The reason solar can now compete with wired at all is the shift from PIR triggering to AOV.

A PIR camera sleeps until a passive infrared sensor detects a change in heat signature, then wakes and starts recording. It is extremely power-efficient, and it structurally misses events: anything slower than the sensor's threshold, anything outside the PIR cone, anything at a distance where the thermal delta is too small, and everything that happens during the wake-up interval before recording begins.

AOV (Always-On Video) keeps the sensor and encoder running continuously at low standby power, using AI scene analysis rather than a heat trigger to decide what deserves an alert. The recording is gapless. There is no trigger delay because there is no trigger. AOV is an industry-generic term — several major manufacturers ship AOV modes — not a proprietary feature of any one brand.

Against wired CCTV, AOV closes the gap that used to make the comparison one-sided: a solar camera that records only when a PIR fires is not really comparable to a 24/7 NVR channel, whereas an AOV camera is, subject to the retention and resolution limits set out above. The trade-off is that AOV demands a genuine power budget, which is the entire reason the panel and battery sizing section above matters.

One caution when comparing quotes across brands: ask what resolution and frame rate the camera records at in AOV mode, not what appears on the box. It is common for solar lines to advertise a peak figure and then step down resolution or frame rate once continuous recording is enabled, because the energy balance requires it. Our own answer, stated plainly: the SolaGuard catalogue is 1080p to 2K, 2K is the ceiling on all 150 stock SKUs, and 4K exists only as a custom or OEM build with its own quotation and lead time. For a full technical treatment, see the AOV solar camera buyer's guide.

Lens configuration: single, dual or triple

A question that comes up constantly once the power question is settled, and one where the cheapest option is often correct.

Single-lens PTZ

One 2K sensor on a pan-and-tilt mechanism. Lowest cost per mounting point, and the right choice where a single adjustable view covers the scene: a gate approach, a yard, one storage row. The accepted limitation is that the camera is blind wherever it is not currently pointed — a PTZ covers a wide area sequentially, not simultaneously. Example: SG-C41G-10T66-V2, 2K, 8 W panel, 8000 mAh.

Dual-lens fixed

Two 2 MP sensors recording simultaneously, no moving parts. This is the evidence-completeness choice: both angles are always recording, so there is no "the camera was facing the other way" gap, and there is no mechanism to seize after two monsoons. Right for gates, weighbridges, loading lanes and any position where the two useful angles are known at design time. Example: SG-D42G-10F66-V5, or the 15 W / 20000 mAh SG-D42G-15F66-V7 for monsoon-region duty.

Triple-lens PTZ

Three sensors plus pan and tilt: a panoramic view retained at all times and a steerable detail view on top of it. The most coverage available from a single pole, which matters when each additional mounting point on open ground costs a pole, a concrete base and a site visit. Example: SG-S43G-10T66-V10.

Design rule: fixed multi-lens where you need to prove what happened, PTZ where you need to see across open ground, and bear in mind that the pan/tilt assembly is the most mechanically stressed subsystem on any outdoor camera.

Weatherproofing, IP66 and why cameras still die in storms

IP66 means two things. The first digit, 6, is dust-tight — no ingress of dust at all, tested under vacuum. The second digit, 6, is protection against powerful water jets from any direction: a 12.5 mm nozzle delivering roughly 100 litres per minute from 3 metres. It is not an immersion rating; that is IP67 and IP68. All SolaGuard outdoor models are IP66, and we do not claim IP67.

Buyers who have lost cameras to storms usually assume the rating was overstated. In our experience the rating is almost never the cause. In order of field frequency, the real causes are:

The cable gland. Under-tightened, or fitted without its rubber insert, or with a cable thinner than the gland was sized for. Water tracks down the pigtail into the body. This is the number one cause by a wide margin.
The microSD / reset flap left unclipped after installation or after a card swap. The seal only works when the cover is seated and latched.
Taped joints instead of a sealed enclosure. Insulating tape is not a weatherproofing product. Pigtail joints belong in a gel-filled or IP-rated junction box.
Connectors mounted facing upwards, so water pools in the housing instead of running off. Orientation is a specification, not a detail.
Lightning-induced surge on long copper runs — a wired-system failure mode. A 300-metre buried Cat6 run is an antenna. This is one meaningful reliability advantage of solar 4G in tropical storm belts: there is no long conductor to couple a strike into.

Add two tropical-deployment specifics: mount at a downward tilt so the lens housing sheds water rather than holding a droplet across the IR window, and in coastal or aquaculture settings expect salt-driven corrosion at the bracket and fastener interface long before the housing fails — specify stainless fixings.

Night vision: colour versus infrared

Do not choose. Specify dual-light and then configure it. Infrared gives covert monochrome imaging to roughly 20–30 metres at negligible power cost and is the correct standing default. Full-colour night vision uses a white LED spotlight and is what produces evidence a court or an insurer can use — clothing colour, vehicle colour, plate legibility — but it draws roughly 1–2 W while lit and announces the camera's presence. On a solar power budget the right configuration is IR as default with the white light triggered only by AI human or vehicle detection. You get colour on the events that matter and IR standby for the rest of the night, without flattening the battery by 03:00. All SolaGuard outdoor solar models ship with full-colour plus IR dual-light and human/vehicle detection as standard.

Best use cases by industry

Sector	Recommended	Why
Construction sites	Solar 4G, strongly	No power or IT for the first weeks, layout changes every phase, cameras must be redeployable, and the compound is exactly where copper would get cut by an excavator
Farms, ranches, plantations	Solar 4G perimeter + wired at the buildings	Distance is the whole problem: gates, pump houses, stock pens and fence lines are hundreds of metres from the meter. Livestock theft happens at the fence, not the farmhouse
Warehouses and yards	Mixed	Wired inside where cable trays already exist; solar 4G on the outer fence, container stacks and unlit back lots
Ports and logistics	Solar 4G for yards, wired for gates	Container stacks move constantly and trenching a paved terminal is prohibitively expensive; gate lanes justify fixed infrastructure
Car parks	Solar 4G	Open ground, long runs under paving, no shelter for cable — the trench cost per camera is at its worst here
Hotels and resorts	Wired indoors, solar 4G on grounds	Interiors have power and IT; car parks, beach access, perimeter walls and outbuildings do not, and guests should not see trenches
Schools and campuses	Mixed	Wired in buildings, solar 4G on sports fields, gates and boundary walls where digging through a live campus is disruptive
Utilities, telecom sites, remote infrastructure	Solar 4G only	Frequently no grid at all; the alternative is not wired CCTV, it is no CCTV

Procurement: MOQ, tiers, lead times and OEM

For importers, distributors and procurement companies, the commercial terms matter as much as the specification. SolaGuard is the brand of Shenzhen Leksell Security Technology — TÜV Rheinland certified, established 2012, with CE, FCC and RoHS on the relevant models. We are the factory, not a trading intermediary, which is what makes OEM and private label possible on all 49 AOV models.

MOQ: 10 units for a trial order, 100 units for OEM/ODM builds
Dealer tiers: 20% from around 10 units, 30% from around 50 units
Lead times: samples 7–10 days by air; bulk 25–40 days by sea; Vietnam domestic 7–10 business days from our Ho Chi Minh City office
Catalogue: 150 SKUs including 49 AOV solar models; wholesale prices quoted per order
Customisation: higher resolution, larger battery and panel, expanded storage, custom firmware and full private-label branding are quoted case by case — price, quantity and lead time always come from a person, never from a web page

See wholesale pricing and MOQ for the commercial terms, or the OEM and distributor programme if you are evaluating private label. If you are still comparing suppliers rather than models, the B2B wholesale buyer's guide covers factory verification, certificate checking and MOQ negotiation.

Frequently asked questions

Is a solar 4G camera cheaper than wired CCTV over five years?

On any site that requires trenching, yes, and by a wide margin. For an eight-camera, 600-metre perimeter, a wired PoE build costs roughly USD 9,240 over five years (USD 7,820 of it up front) against roughly USD 3,490 for solar 4G — about 62 percent lower. The reason is that trenching and ducting, not cameras, dominate a wired budget: at USD 8 per metre, 600 metres of trench is USD 4,800, more than ten times the cost of the eight cameras themselves. Solar 4G has no trench line at all. Its cost is back-loaded instead: SIM data at roughly USD 4 per camera per month is the single largest five-year line item at USD 1,920. Substitute your own trenching rate and SIM tariff — those two numbers decide the outcome.

When is wired CCTV still the better choice?

Wired wins on compact, building-mounted sites. If every camera sits within about 60 metres of the equipment room, mounts on an existing wall, and can be reached by surface conduit with no digging, a wired PoE system costs roughly USD 3,100 over five years against USD 3,490 for solar — wired is genuinely cheaper. Wired also wins where you need guaranteed 24/7 high-bitrate recording on every channel with no power budget to respect, where the site has no usable 4G signal, or where regulation demands footage stay on a local NVR under your physical control. The honest rule: wired is a building technology, solar 4G is a land technology.

We already have mains electricity on the farm. Why would we use solar cameras?

Because mains at the farmhouse is not mains at the fence line. The cost of a wired camera is not the electricity, it is the distance: every metre between the equipment room and the camera costs roughly USD 9 in trench, duct and cable, plus a PoE extender and enclosure beyond 100 metres. A camera on a gate 400 metres from the house costs about USD 890 to connect and about USD 42 to buy. Having grid power on site changes almost nothing about that arithmetic. Where mains genuinely helps is the yard immediately around the buildings — use wired there and solar 4G for the perimeter, gates, pump houses and stock pens. Mixed fleets are normal and correct.

How much mobile data does a solar 4G CCTV camera use per month?

Budget 5 to 10 GB per camera per month for normal use. The camera records 24/7 to its own microSD card, so the SIM only carries event clips, snapshots, keepalive traffic and your live-view sessions. A typical mix — 30 event clips of 15 seconds a day, plus 10 minutes of live viewing on the sub-stream — works out at roughly 6 GB per month. Heavy remote viewing of 30 or more minutes a day on the main stream pushes it to 15 to 25 GB. In Vietnam an IoT or M2M data plan in that range costs roughly USD 2 to 5 per camera per month; in Latin America USD 5 to 8 is more typical. Insist on an M2M tariff rather than a consumer SIM, and set the app to open the sub-stream by default.

How long does a solar camera battery last, and what maintenance does it need?

Expect three to five years of service life from the internal lithium pack before capacity decline becomes visible as shorter monsoon autonomy, and budget a battery service or unit swap around year four. Practical maintenance is three things, twice a year: wipe the panel (dust and bird droppings cost more harvest than any other factor), confirm the panel is still at its installed tilt and has not been shaded by new growth, and check the microSD card health in the app. Do not let a pack sit fully discharged through a long cloudy spell — if a camera has dropped into low-battery sleep mode for more than a few days, charge it from mains once rather than waiting for the sun. Depth of discharge, not age, is what kills these packs.

What is the difference between AOV and PIR cameras?

PIR (passive infrared) cameras sleep until a heat signature moves across the sensor, then wake and record, which costs a wake-up delay and misses anything slow, distant, cold or outside the PIR cone. AOV (Always-On Video) keeps the sensor and encoder running continuously at low standby power, so the recording has no gaps and no trigger delay. AOV is an industry-generic term used by several major manufacturers, not a proprietary brand feature. The trade-off is energy and storage: AOV needs a real power budget behind it, which is why AOV solar models pair 8 W to 15 W panels with 8000 mAh to 20000 mAh batteries, and why a 128 GB card holds around 10 to 14 days of continuous 2K footage rather than months of clips.

4G or WiFi for an outdoor construction or farm camera?

4G for anything outside a building, WiFi only inside the signal envelope of a router you control. WiFi cameras inherit every failure of the site network: a tripped breaker in the site office, a router reboot, a changed password, a contractor unplugging the access point at handover. On construction sites the router often arrives after the theft risk does — the perimeter needs coverage from day one, before power and IT are commissioned. 4G LTE brings its own independent link, works from the first hour on site, and moves with the camera when the compound layout changes. The cost of that independence is the SIM tariff, roughly USD 4 per camera per month. Where a site has both, 4G plus WiFi dual-connectivity models let the camera fall back automatically.

What does IP66 actually mean, and why do cameras still fail in storms?

IP66 means the first digit 6 (dust-tight, no ingress at all) and the second digit 6 (protected against powerful water jets from any direction — a 12.5 mm nozzle at roughly 100 litres per minute from 3 metres). It does not mean submersible; that is IP67 and IP68. In the field, storm failures are almost never the housing rating. In order of frequency they are: an unsealed or under-tightened cable gland letting water track down the pigtail, the microSD and reset flap left unclipped after install, a pigtail joint taped rather than housed in a gel-filled or IP-rated junction box, mounting with the connector facing upwards so water pools in it, and on wired systems lightning-induced surge on a long copper run. If a batch of IP66 cameras is failing after storms, inspect the glands and the connector orientation before you blame the rating — and note that a solar 4G unit has no long copper run to conduct surge in the first place.

What resolution do solar AOV cameras actually record at?

Ask any vendor for the resolution and frame rate in AOV mode specifically, not the peak figure on the box — several solar lines advertise a high headline resolution and then reduce resolution or frame rate once continuous recording is enabled, because the power budget demands it. Be equally sceptical of headline megapixel counts on battery products in general. SolaGuard's own answer, stated plainly: the 150-SKU catalogue is 1080p to 2K, and 2K is the ceiling on stock models. Higher resolutions exist only as custom or OEM builds, quoted case by case with their own lead time. A 2K stream that runs 24/7 all year is worth more than a 4K figure the camera only reaches with the solar panel disconnected.

Should I choose a single-lens, dual-lens or triple-lens solar camera?

Single-lens PTZ is the lowest cost per point and the right answer where one adjustable view covers the scene — a yard, a gate approach, a single storage row — accepting that the camera is blind wherever it is not currently pointed. Dual-lens fixed records two angles simultaneously with no moving parts, which suits gates, weighbridges and lanes where the two useful angles are known in advance and evidence completeness matters more than flexibility. Triple-lens PTZ gives a panoramic view plus a steerable detail view from one pole, which is the most coverage per mounting point on open ground. As a design rule: fixed multi-lens where you need to prove what happened, PTZ where you need to see across a wide area, and remember that a pan/tilt mechanism is the most mechanically stressed part of an outdoor camera.

How long does solar 4G camera installation take compared with wired CCTV?

A solar 4G camera takes 5 to 10 minutes per unit: insert the SIM and microSD, fix the bracket, aim the panel, scan the QR code in the app. There is no cable pull, no trench, no NVR configuration and no licensed electrician. An eight-camera perimeter is a single day's work for one technician plus a helper, most of it spent setting poles. The equivalent wired build is a multi-day civil works job — trench, duct, backfill, cable pull, terminate, test, then commission the NVR and surge protection — typically five to eight working days for the same eight cameras across a 600-metre perimeter, and it has to be scheduled around anyone else digging on site.

Colour night vision or infrared — which should I specify?

Specify dual-light and configure it, do not choose one. Infrared gives covert monochrome imaging out to roughly 20 to 30 metres at very low power cost, and is the right default for overnight standby. Full-colour mode uses a white LED spotlight and is what actually produces usable evidence — clothing colour, vehicle colour, number plates — but it draws roughly 1 to 2 W while lit and is visible to the intruder. On a solar power budget the correct configuration is IR as the standing default with the white light triggered only by AI human or vehicle detection. You get colour evidence on the events that matter and IR standby for the other 23 hours, without the spotlight flattening the battery by 03:00.

Conclusion

Solar 4G and wired CCTV are not competing products so much as answers to different site geometries. Wired is a building technology: dense, cabled, deep retention, cheapest when everything is close together and already has walls. Solar 4G is a land technology: independent nodes, flat scaling cost, deployed in minutes, cheapest the moment a trench enters the budget — which on farms, construction compounds, container yards, car parks and rural infrastructure it always does.

The five-year model above puts numbers on that: 62 percent lower total cost and 89 percent lower capital on a typical 600-metre perimeter, reversing to an 11 percent advantage for wired on a compact building-mounted site. Take the assumptions table, substitute your local trenching rate and your carrier's M2M tariff, and the answer for your specific project will fall out in about ten minutes. Most serious deployments end up mixed, and that is the correct outcome, not a compromise.

How to decide, in five questions

How far is the farthest camera from your equipment room? Under 60 metres with an existing wall to mount on — price wired first. Over 100 metres, or across open ground — solar 4G wins before you have finished the spreadsheet.
What is your local trenching rate per metre? Multiply it by your total run length. If that number exceeds the entire solar hardware budget, the comparison is already over.
How long must footage be retained? Under 14 days continuous — a 128 GB card is sufficient. 90 days continuous on every channel — plan an NVR or a cloud archive with the data budget to match.
What does an M2M SIM cost in your market? Under USD 5 per camera per month, solar wins almost everywhere. Above USD 8, re-run the model — compact sites may flip back to wired.
Will the cameras move? Phased construction, seasonal agriculture, container yards and event sites all favour equipment that redeploys in ten minutes and owes nothing to a trench.

Next steps: send us your site dimensions, camera count and target retention, and we will return a specification and a tiered quotation. WhatsApp +86 188 1869 9870 · +86 188 1869 9870 · info@solaguard.net · contact form.

About this guide. Written by the SolaGuard research team with technical input from Shenzhen Leksell engineering. Cost figures are a transparent model built on the stated assumptions, not a quotation; market-rate inputs are labelled as assumptions throughout and should be replaced with your local rates. Product prices are catalogue MSRP and are subject to dealer tier discounts. Power figures are engineering estimates using the derates stated in the text, not guaranteed outputs.