All our camera will be tested 100% before sending to you. Specification: Image Sensors: 1/4 "CCD color TV system: NTSC and PAL Effective pixels: 728 x 512 Resolution: 520 TV lines Video Output: 1.0Vp-p, 75 Electronic Shutter: 1/60 (NTSC) -1 / 10000s, 1/50 (PAL) -1 / 10000s Waterproof Grade: IPX 68 Operating temperature: -20 ° C ~ + 80 ° C RH95% Working Power (DC): 12V Current consumption: 90 mA max Setting: 1. Set the camera to your car's license plate area 2. Adjust the camera lens to its best position. 3. Connect the power wire (red and black) to light power wires of your car. 4. Connect the video (yellow) to the display. On television Car Rearview Camera System: Typically, most monitors support both NTSC and PAL TV system. So it does not matter what camera PAL or NTSC system. However, if you are not sure, please check that your monitor supports NTSC or PAL system. If your monitor supports only NTSC or PAL, please leave us a message that the TV system that you need in one business day after you make the payment. Or we will send the NTSC or PAL system camera at random. Packing list: 1 * CCD Car Front View Camera 1 * 6 m video cable 1 * power cable 1 * User Manual