Wireless Quad Monitor Camera System ,Back Up System,Car Reversing System,Car rearvision system,Agricultural Parts,car rear view system,car reversing camera system,rear view system. Usable Illumination : 0Lux ( Built in 12pcs IR LED's for Picture Support in the Dark) Free viewing angle: 130° Waterproof: IP66 Shockproof: 10G Automatic Heating Below +10oC Free Operating Voltage: DC11-32 Volts Dimensions: 69(W) x 43(H) x 38(D) mm (without mounting) 7 inches Digital Screen Wireless Receive Quad Monitor (Model:SP-736) 7" Digital Screen Wireless Receive TFT Quad Monitor with Removable Sun Visor Single View/Split View/Quad image View Selectable Built-in 4 CH(2.414/2.432/2.450/2.468)GHz Wireless Receiver Receiving Sensitivity:-85dB OSD MENU Separately Set Each Camera Trigger Priority OSD MENU Separately Set Each Camera Reversing Image Delay Time 0-30” OSD MENU Separately Set Each Camera Mirror/Normal image Manual and Automatic Switch Display Mode 1 Cable Solution System Make It Easy For Users To Install and Use The Device In Any Places Color System:PAL/NTSC (AUTO) Display Resolution: 2400(H) X 480(V) dot Wide view angle(CR>10):(up/ down): 45/65 (left/right): 65/65 Brightness (cd/m2): 300 ( Automatically Adjust Environment by According) Contrast ratio: 500:1 Back-light:Single LED Operating temperature: -20°C to +50°C Storage temperature: -30°C to +80°C Free Operating Voltage DC11-32V (1 Cable Solution) External dimensions:L*W*T(180X118X58)mm(without mounting) Weight Approx: 479g Product Accessories Monitor bracket, Electrical connecting cable solution, Auto cigarette lighter.