18 Ch Channel 10A Amp Power Supply Switch Box 12V DC for CCTV DVR Security Camera Power Distribution Unit: PTC Fuse Power supply the fuse can be reset by itself you won't get fuse burn problem. Power Box Features: General Protection: each output has individual PTC fuse (Positive Temperature Coefficient) and LED indicator, when problem occurs, only affect the individual output, other outputs still working. Circuit Short Protection: when short condition occurs, individual PTC fuse will open the circuit, when condition removed, PTC fuse will automatically back to close. High Voltage Protection: when high voltage occurs, the surge protection will be hit through to protect the connected device. Over Current protection: when over current occurs, the power supply will automatically switch to self-protection status, when condition removed, then switch back to normal. Application: CCTV Camera, PTZ, IR Illuminators, Video Process Equipment. Access Control Reader, Lock, Panel, etc. DC Jack Features: DC Jack tip: 5.5 mm (outside dimension) x 2.1 mm (inside dimension) Pigtail Cable Length: 12 cm (5") POWER JACK CONNECTOR FOR COAXIAL WIRE, IDEAL FOR VIDEO SURVEILLANCE CAMERA INSTALLATIONS.