In short
To monitor a site without electricity or internet, use 4G cameras powered by a solar panel and battery, or wireless alarms with photo detectors that send alerts over the mobile network. First check mobile coverage, panel orientation and what you need to see or detect.
Common options
| Solution | What it offers | Bear in mind |
|---|---|---|
| 4G camera with solar panel and battery | Live view and recording, motion alerts. | Data use and autonomy on cloudy days. |
| Battery alarm with photo detectors | Detection and image verification when triggered. | No continuous video. |
| Both combined | Reliable detection and video to verify. | Higher upfront investment. |
What to check first
- Real 4G coverage at the exact installation point, not just in the area.
- Sun hours and shading on the panel throughout the year.
- Mounting height and fixing point to deter theft or sabotage of the camera itself.
- A data plan matching use: frequent live viewing uses more.
- Where footage is stored: card in the camera, cloud or both.
Building sites: changing needs
On a building site the perimeter and entrances change with each phase. Standalone solutions can be moved without depending on the temporary power supply.