7 Inch TFT Digital 2.4G Wireless Cameras Audio Video Baby Monitors 4ch Quad DVR CCTV Video Surveillance for home Security system 4Channel digital wireless camera and DVR system / Total digital wireless, no interference, no privacy leak / Supports system information displayed on the screen 7 inch TFT LCD Monitor with integrated video recorder / Support up to 32GB TF / Supports synchronous audio recording and video recording / Support real time clock display / CMOS image sensor Support 4 cameras/24hours/7 days non-stop overwrite recording / Multiple recording modes: manual, schedule and motion activated Supports synchronous audio recording and video recording.Supports the NTSC / PAL video output.Support audio output. Weatherproof CMOS color cameras for indoor and outdoor application / 6-15 meter night vision range,widely used as CCTV system for the usage of car park,office security and garden guard,etc.