Composition : 1 wireless screen multi-display + 1 wireless cameraMax Cameras : 4 cameras maxVision Angle : 130°Max Distance with Monitor : 300 m (without barrier) Voltage12/24 VConsumption10WColor - YesScreen display - Multi-display Screen Size - 7" Resolution - 1024 x 3 (RGB) x 600Audio -Built in SpeakerNight/Day sensor - YesNight Vision Distance - 8-10 m Infrared LED Number - 4 LEDs Recording - Real time Recording on micro SD card 125GB (not included) Time Delay - 200 ms Languages - French, English, Chinese, German Display Modes - normal, horizontal, vertical, mirror Sunshade - Yes Reverse Distance Grid - YesPairing - AutomaticVideo Standard - PAL / NTSCIP protection - IP69K (camera) Operation Temperatures - -20°C to +70°CVibration Resistance - ISO 16750-3 - max 5,9GIndustry - Agriculture, Construction, Forestry, Handling and Forklifts, Mining, Trailers and Semi-trailers, Trucks, Vans and Chassis cab