CCTV Camera SMPS & DVR DC power supply DIY tester tool

Best useful DIY tool for CCTV Technician & Installers to test the CCTV Camera Smps power supply and dvr power…

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NVR & DVR Event or Motion Alarm out port Turn ON/OFF Electrical Lights using DC5V Relay

Buy Relay Online : https://amzn.to/3SyOESg When alarm is triggered or event occurred, and the alarm/event linkage is configured, the device…

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