... Product Introduction The basic function of the DVR can be summarized as: DVS=CCTV+DVR, that is to say, when moving ... any moment and also can transfer the records to computer. DVR can be widely used in house, office, supermarket, etc ... the simple menu for operation, no need to install any software.3. PARAMETERS:Working voltageDC5VWork current200mATemperature tolerance-10 centigreed~+50centigreedMaximum ...