... MCU control· Chinese/English menu optionalTechnical parameter: Video input: 4channels(PAL), PWL:1.0Vp-p,Impedance:75 ... 1channel(PAL),PWL:1.0Vp-p,Impedance:75ΩAudio input: 2 channels, Linearity PWL:1.0-2.2vp- ... remote port Power input: DC8-36V,Power switch,Over-current, over-voltage protection,Delay power off function.Power output:DC12V for camera, ... )mm 4 channel HDD DVR with power supply for cameras