By the SightShield team · · 3 min read
Cameras where there is no power or internet
Many places that need watching have neither a power connection nor broadband: an open plot, a farm or farmhouse outside the city, a construction site before the permanent supply arrives, a quarry, a solar park, a borewell or a pump house. Solar panels with batteries solve power, and a 4G connection solves connectivity. Together they make a self-contained camera that can be fixed to a pole almost anywhere with mobile signal.
The building blocks
| Part | What it does | What to check |
|---|---|---|
| 4G camera or camera with 4G router | Connects to the internet through a SIM card | Supports the LTE bands Indian operators use, such as bands 3, 5 and 40; signal strength at the site |
| Solar panel | Charges the battery by day | Wattage sized for cloudy days, angled south, clear of shade |
| Battery | Runs the camera at night and in bad weather | Lithium chemistry, capacity for two to three days without sun |
| Charge controller | Protects the battery | Built in on kit systems |
| Local storage | Records on a memory card or small NVR | Card size and overwrite settings |
Sizing power for Bangalore weather
Bangalore has plenty of sun most of the year, but the June to October monsoon brings runs of overcast days. A camera that works in March can die in August if the battery and panel are too small. Size for the worst week, not the average: add up the camera’s and router’s consumption over 24 hours, allow for infrared or white light at night, and choose a battery that covers at least two to three days without sun and a panel that can recharge it in a normal day. Low-power cameras that sleep and wake on motion stretch the battery much further.
Data usage and recording
- Continuous live upload from a 4MP camera can use many gigabytes a day — too much for most SIM plans.
- Better: record locally on the memory card and upload only motion or AI event clips and snapshots.
- View live only when needed; most apps let you open the stream on demand.
- Choose H.265 compression and sensible bitrates to save data.
- Use a data plan with a daily or monthly allowance that matches your clip volume, and monitor usage in the first month.
Protecting the camera itself
- Mount on a tall pole, 4 metres or more, with anti-climb guards.
- Use tamper-proof screws and lockable battery boxes.
- Point one camera at another so anyone tampering is recorded.
- Enable tamper and offline alerts so you know if a camera goes dark.
- Back up key clips to the cloud so evidence survives if the camera is stolen.
Deterrence on unmanned sites
On a site with nobody present, recording alone only tells you what was stolen. Cameras with human detection, a siren and lights, and a phone alert to the owner or a monitoring service, give a chance to stop theft of cement, steel, cables and pumps while it is happening.
Active deterrence cameras →Typical uses
| Site | Typical setup |
|---|---|
| Construction site, early stage | Two or three solar 4G cameras at the gate and material yard, moved as work progresses |
| Farm or farmhouse | Cameras at the gate, pump house and store; alerts to the owner in the city |
| Vacant plot | One camera with line crossing to detect encroachment or dumping |
| Solar park or quarry | Perimeter cameras with deterrence, possibly thermal on long fences |
When to switch to mains power and broadband
Solar 4G systems are ideal for temporary and remote sites. Once a construction site has a permanent power supply and fibre, wired PoE cameras with an NVR give continuous recording at lower running cost. We can plan the temporary system so cameras and poles can be reused later.
CCTV for construction sites →Quick answers
Do 4G CCTV cameras need Wi-Fi?+
No. They connect through a SIM card, so they work anywhere with mobile signal.
How much data does a 4G camera use?+
It depends on settings. Event-only uploads use far less than continuous streaming, which can use many gigabytes a day.
Will a solar camera work during the monsoon?+
Yes, if the battery and panel are sized for several cloudy days. Undersized kits fail in the monsoon.
Where is the footage stored?+
Usually on a memory card in the camera, with event clips uploaded to the cloud or app.
Can thieves steal a solar camera?+
They try. Tall poles, anti-climb guards, locked battery boxes and offline alerts make it much harder.