CCTV Power Supply
CCTV Power Supply Manufacturer
Prowin offers Power solutions for a wide range of industries. Such as CCTV, Industrial, 3D Printers, telecommunications, the LED industry, home and office industries, our power solution is sure to meet customized needs. Our qualified power supplies include the enclosed switching power supply, AC-DC wall adapters, and desktop series power Adapters.
CCTV Power Supply Mode
The CCTV industry is becoming more and more popular as people pay more attention to security in their homes and businesses. To guarantee the CCTV cameras work well, it is important to use a power supply. How to power them?
There are three popular power supply modes: Independent power supply; Centralized power supply; and POE power supply
Independent power supply
Independent power supply mode means that power adapter is powering one security camera independently. It uses a DC power adapter next to each camera.
Power Adapters for Independent power supply mode：
Item | Input | Efficiency | Output | Picture | Size |
AC 100-240V | ≥87% | DC 12V 2A |  | 94*47*34mm | |
AC 100-240V | ≥87% | DC 12V 3A |  | 94*47*34mm | |
AC 100-240V | ≥88% | DC 12V 5A |  | 100*50*34mm |
Centralized power supply mode
Centralized power supply refers to using 12V switching power supply to run CCTV cameras. In modern installations with analog cameras, the power supply box is centralized to all installed cameras. The power supply box could be installed in the monitoring room or any other relevant setting in the facility.
CCTV camera Power Supplies for Centralized mode:
Item | Input | IP Level | Output Voltage | Picture | Output Power |
AC 100-240V or AC110V220V switch | IP 20 | DC 12V |  | 15W-480W | |
AC 100-240V or AC110V220V switch | IP 20 | DC 24V |  | 15W-480W | |
AC 100-240V or AC110V220V switch | IP 20 | DC 5V |  | 10W-300W |
POE power supply mode
Power over Ethernet(POE) is a technology that passes the power over twisted-pair Ethernet cable to the power devices(PD), such as wireless access points, IP cameras, and VoIP phones in addition to the data that the cable usually carries. It enables one RJ45 cable to provide both data connection and electric power to PDs instead of having a separate cable for each. This mode is available when all the powered devices meet the IEEE 802.3bt standard(or other PoE standards).
FAQ
Most CCTV products operate with the 12V DC voltages power supply. In some exceptional cases with 24V AC o 5V DC, we should check with the CCTV product supplier.
Here is a video to figure it out: Power Supply Connection
This depends on the installation environment, and how many CCTV cameras need to be installed. Normally for 1 camera, we use a 12V power adapter with independent power supply mode; less than 4 security cameras, we use a 12V power adapter with centralized power supply mode; 4 or more security cameras, we use a 12V switching power supply box with centralized power supply mode. It is really a long story for this question, welcome to contact us for details.
Turn off the fail CCTV camera, disconnect the power supply and check it with a multimeter, if there’s no voltage or current, then replace the power supply.
If we choose centralized power supply mode, 1 power supply is enough, I will choose the 12V20A power supply for them. It’s better to keep the distance to be less than 30m between them, or it will lead to the cameras failing to work. For infrared cameras, we do not recommend the centralized mode, as the cameras may not work well at night. I will choose the 12V2A adapter for each infrared cameras.
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