7 Inch car monitor for rear view parking and car DVD Parking sensor option show the exact distance of subject behind the car Rear view camera and front view camera option Auto turn on and change picture when reversing the car Features: Screen Size: 7 inch Double TV system: PAL/NTSC. Resolution: 480*234*RGB(QVGA) Two video input: AV1, AV2. DVD/VCD, back-view camera. Auto switch to reversing picture; Special optical lens with anti-glare function and broad vision; Connectable to parking sensor systems, able to realize a perfect combination of sound, image, direction telemeter and digital telemeter. Technical parameters Operating Voltage: 12V DC(24V available) Operation current: 20mA~200mA Sensor installation height: 45~60cm Detection distance: 0.3~2.0m Ultrasonic Frequency: 40 kHz Operating temperature: -10° C ~ +65° C Beep volume: More than 48dB Power Consumption: 8W MAX Dimensions: 10(H)*26(L)*2(W)cm Color: Black, Beige(optional).