Model Number: SB881-L-S351 Brand Name: CISBO Key Specifications/Special Features: Two ultrasonic sensors, one color camera correctly detect obstacle distance, position imageSensors aid detecting potential back obstacles and enable accurate distance measurement to make reversing safe and conventAuto-detecting and auto-alarming mechanismDetection range: 2.0 to 0.3m acoustic signal increases in frequency, when obstacles move closer within 1.5m3.5-inch TFT LCD monitor display shows rear view image, numeric distance, the detected distance is showed on the display, alarm by 3-step bi-bit sound

Easy to install, no damage to car bumper