4G Solar-Powered Construction Site Security Cameras: A Sourcing Guide for Wholesale Buyers

The short answer: a camera that brings its own power and its own network

A 4G solar-powered construction site security camera is a self-contained unit — solar panel, internal battery, LTE modem with a SIM slot — that mounts on a pole, container, fence line or crane leg and records without any mains supply and without site WiFi. For a buyer specifying these for construction, the working specification is: 1080p–2K resolution, an 8000mAh–20000mAh battery matched to an 8W or 15W panel, microSD storage up to 128GB, IP66 sealing, and — the decision most buyers get wrong — Always-On Video (AOV) recording rather than PIR triggering. SolaGuard's catalogue covers this application with 49 AOV models across four series, wholesale prices quoted per order, manufactured by Shenzhen Leksell, TÜV Rheinland certified and established in 2012, with CE, FCC and RoHS on the same lines.

Everything below is about how to choose between those models and what to ask a factory before you commit to a container.

Why construction sites break ordinary camera specifications

A finished building has power sockets and a broadband line. A building site has neither, for months, and the site your customer is securing today may be laid out completely differently in six weeks. That creates four constraints that a normal fixed camera fails on all at once.

No grid power. Temporary supply at a site is usually reserved for tools and lighting, often on a generator that is switched off at night — exactly when the camera matters. A solar unit is not a convenience here, it is the only architecture that works.

No fixed internet. Running fibre to a site that will be demolished into a foundation is not happening. 4G LTE with a local SIM is the only practical backhaul, which means every camera on the site is its own network endpoint and every camera needs its own data plan — a cost line your customer will ask you about.

The site moves. Perimeters shift as excavation, structure and finishing phases progress. Cameras get relocated, sometimes several times in one project. This is why installation time is a commercial specification, not a footnote: at 5–10 minutes per camera, a two-person crew can re-commission a whole perimeter in a morning. Anything requiring trenching, conduit or a network engineer turns every site phase into a project.

The environment is abrasive. Concrete dust, rain, wind-driven grit and constant vibration from plant machinery. IP66 sealing is the outdoor baseline on every model discussed here; it is also worth telling your customers that dust accumulation on the panel face is real and cuts harvest, which is an argument for the larger panel on demanding sites rather than for a higher ingress rating.

AOV versus PIR: the specification that decides whether the theft is on the recording

AOV — Always-On Video — is an industry-generic term, not a brand name. It means the camera records continuously at low standby power, using AI scene analysis to keep the draw down when nothing is happening and to raise recording quality when it is. PIR-triggered cameras do the opposite: they sleep until a passive infrared sensor detects a heat change, then wake and record.

On a construction site, PIR fails in ways that matter commercially:

• Slow movement does not trigger it reliably. Someone walking a length of rebar or copper cable to a fence gap at a deliberate pace can pass under a PIR sensor without waking it.
• Non-thermal events are invisible. Material sliding off a stack, a gate left open, a delivery unloaded in the wrong bay — there is no heat signature to detect.
• Wake-up latency costs the identifying frames. The first seconds after a trigger are usually the seconds containing the face or the plate.
• The timeline has holes. This is the one that decides disputes. When a subcontractor loads material onto a truck at 05:00, the question is never "did something move" but "was this the scheduled pickup or not" — and answering it needs an unbroken record either side of the event, not a 20-second clip.

For site security resold to contractors, insurers and plant-hire firms, continuous recording is the feature that justifies the price step over a consumer trail camera. It is worth building your pitch around it.

The four AOV series, and which one belongs on a site

Read that table carefully, because the power split is not where buyers expect it. Only the SG-D42G-15F66-V* series carries the 20000mAh battery and 15W panel; the single-lens, triple-lens and cheaper dual-lens series all run 8000mAh with an 8W panel. Lens count and energy budget are two independent axes, and quoting them as if the most expensive lens configuration automatically brings the biggest panel will embarrass you in front of a technical buyer.

A practical way to allocate them:

• Single lens (SG-C41G-10T66-V*) — one defined choke point. A gate, a fuel bowser, a material cage. Cheapest way to add a covered point, and the natural volume filler in a mixed order.
• Dual lens, 8W (SG-D42G-10F66-V*) — the workhorse. Wide context and detail from one mount, one SIM, one mounting job. The 18 variants make this the series to shortlist from first; SG-D42G-10F66-V1 is a representative configuration.
• Triple lens (SG-S43G-10T66-V*) — perimeter corners, where three directions have to be covered from one pole. The saving is not in the camera, it is in one mount and one data plan instead of three.
• Dual lens, 15W (SG-D42G-15F66-V*) — specify this where harvest is compromised: winter projects, sites where a rising structure shades the mount for part of the day, heavy dust, or a long rainy season. SG-D42G-15F66-V1 is the representative build in the series, with wholesale prices quoted per order. If your market has a monsoon, this is the series that keeps recording through it.

Full specifications for each variant are on the product pages, and the variant suffixes differ in configuration, so confirm the exact SKU on the quotation rather than ordering at series level.

Storage, SIMs and the questions to settle before a bulk order

Storage is microSD up to 128GB as standard, which for continuous recording means the card cycles — older footage is overwritten as new arrives. Set expectations with your customers on that directly: the retention window depends on recording settings, and sites that need a longer archive should be quoted with offload to cloud or to a site recorder, not sold a promise about card capacity. Higher-capacity cards are a custom-order conversation with the factory, not a catalogue line.

On connectivity, the item to nail down before a container leaves is carrier compatibility in your market. Vietnamese, Mexican, Colombian and Brazilian networks do not run identical band plans, and this is a factory question with a factual answer — ask for it in writing against the specific SKU before bulk, and validate it on the sample units, on a live SIM, on a real site. A camera that registers on the network in the office and drops at the far end of a site is a warranty problem you will own.

Also settle: whether the customer supplies SIMs or you bundle them, who pays for the data, and what happens to the recording when the LTE link drops. These are the questions that separate a distributor from a box-shifter, and they are where your margin is defended.

Commercial terms for importers and distributors

OEM and private label are available across the catalogue, including all 49 AOV models — your branding on the housing, packaging and app-facing identity, at the 100-unit threshold. For construction resale that matters more than it does in retail, because the camera is often specified into a contractor's standing kit list, and a contractor lists a brand, not a factory part number.

Vietnam-market buyers are served from the Ho Chi Minh City office at 7–10 business days, which is the difference between quoting a project and losing it to whoever has stock. Elsewhere, plan around air samples first and sea freight for the follow-on volume. Pricing tiers and payment terms are set out on the wholesale page.

How to run a trial order that tells you something

Ten units is the trial MOQ, and ten units is enough to answer every question that matters — if you spend them deliberately rather than putting all ten on the easiest mount on the easiest site.

1. Mix the series. Take dual-lens 8W units as your baseline, add at least one 15W/20000mAh unit and one single-lens unit. You are comparing configurations, not confirming one.
2. Deliberately mount one badly. Put an 8W unit where a rising structure will shade it by mid-afternoon. You need to know where the 8W boundary sits in your climate before a customer finds it for you.
3. Test through your worst weather. IP66 in a specification sheet and IP66 after a rainy season on a dusty site are the same claim verified to different standards. Verify it yourself.
4. Time an actual installation. 5–10 minutes per camera is the figure; measure it with your own crew and use your own number in your sales material.
5. Check the quotation against the catalogue. Variant count, price band, battery and panel per series — if a supplier's article and a supplier's price list disagree, the price list is the one you will be billed against.

Run that properly and the 100-unit OEM step is a decision with evidence behind it rather than a leap. Margin structure and territory terms are on the dealer page, and specification questions — carrier bands, custom battery or storage configurations, OEM artwork requirements — go to info@solaguard.net, where a human answers with figures tied to a specific SKU. Quantity, price and lead time always come from a person, never from a page.