... .Support remote safety upgrade;12.power cameras directly ParametersModelVR8800( (4-CH mobile DVR)Working voltage8—36V(must be 14—36V when power camera ... VR8800; AVP cable*4,, AV cable*1,power and control cable *1, C-box *1 , remote *1 , , key *2 , ,manual *1 , 4-ch vehicle DVR