... to prevent data lost and file destroyed by instant power-off;> Multiplex interface,one SD card slot,1 USB interface,6 alarm input,2 ... alarm output,2 RS485,1 RS 232 etc.;> h.264 video camera ... ,recording speed,position acceleration,temperature brakes,backing up,turns,alarms and other important information;> DC8V to 36V wide range voltage power ...