Description
A 12V 20A SMPS (Switch Mode Power Supply) with cooling fan is commonly used to power CCTV camera systems and other 12V DC equipment.
Typical specifications:
- Input Voltage: 100–240V AC, 50/60 Hz
- Output Voltage: 12V DC
- Output Current: 20A (maximum)
- Output Power: 240W
- Cooling: Built-in fan for heat dissipation
- Protections: Overload, overvoltage, short-circuit, and over-temperature (varies by model)
Suitable for:
- CCTV camera systems
- DVR/NVR power distribution
- LED strips and signage
- Access control systems
- Other 12V DC devices with a total load up to 20A (240W)
For CCTV, a 12V/20A SMPS can typically power:
- Around 15–20 IR bullet/dome cameras (depending on each camera’s current consumption), or
- Fewer cameras if they have high-power IR LEDs or PTZ functions.
If you’re looking to purchase one, I can also recommend reliable brands or help you choose a model based on the number of cameras you need to power.
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