This system is suitable for the truck, bus, RV, trailer, a baby nurse , farm custody and so on. This wireless backup camera is your answer. Not like the license plate camera which has the transmitter built-inside the camera, this wireless camera set comes with a transmitter which detached from the camera. You can fix the camera in the location you want, and move the transmitter to a location which is closer, and less obstructed object to the monitor. Wireless Color COMS Backup Camera: Image Type: 1/3 " Color SHARP CCD Built in 2.4GHz transmitter Transmission Power : 10mW/CE; 2mW/FCC Estimate of 100 meter wireless send distance without block Horizontal Resolution: 330TV Lines Effective pixel: NTSC: 510(H)X492(V);PAL:500(H)X582(V) Usable Illumination: 3Lux (18pcs LEDs for night vision 10M ) Free viewing angle: 130° Water resistance: IP68,Alloyed shell,Waterproof for outdoor use Shockproof: 10G Power supply: DC12-24V Dimensions: 83(W) x 63(H) x 70(D) mm (without mounting) Weight Approx: 200g 7"TFT LCD Color Monitor with Digital Screen: 7" HD Digital Screen Color Reversing Monitor with Removable Sun Visor Built in (2.414/2.432/2.450/2.468)GHz Wireless Receiver (Standard 4CH Select 2CH) Receiving Sensitivity: ≤-80dBm Color System:PAL/NTSC (AUTO) Display Resolution: 800(H) RGB X 480(V) OSD MENU Separately Set Each Camera Trigger Priority OSD MENU Separately Set Each Camera Reversing Image Delay Time 0-30" Manual and Automatic Switch Display Mode Wide view angle(CR>10):(up/ down): 45/65 (left/right): 65/65 Brightness (cd/m2): 300 Contrast ratio: 500:1 Back-light : Single LED Operating temperature: -20℃ to +70℃ Storage temperature: -30℃ to +80℃ Power supply: DC11~32V External dimensions:L*W*T(185*123*50)mm (without mounting) Weight Approx: 450g