... anti-shock mounted case; 3.h.264 compression; 4.with 3G function; 5. 4 video input Here is the bus dvr's specification ... remote management and playback analysis. MDVR looks simple, the features with superior shakeproof, installation flexibility, powerful, and high reliability. Bus ... power-off,enter into protected mode.Power output12VOutput voltage:12V(+/-0.2V),Maximum current:2A.Car key’s signal≤4VCar ...