4 Sensors LED Display Car Parking Sensor Kit Auto Reverse Backup Radar Monitor Detector System Universal Descriptions: The reversing radar is designed based on the principle that bats can fly at high speeds during the night without colliding with obstacles. The probe is mounted on the rear bumper. Depending on various specifications, the probes may come in configurations of two, three, four, six, or eight. The probe emits signals at a 45-degree angle to detect targets above and below. Its greatest advantage is its ability to identify obstacles that are lower than the bumper, which may be difficult for the driver to see through the rear window, such as flower beds or children playing behind the car. When the gear lever is shifted into reverse, the reversing radar automatically engages, with a detection range of 0.3 to 2.5 meters, making it practical for drivers while parking. Specifications: Sensor color: Black/White/Silver/Red/Blue/Grey/Gold Supply voltage: 10.5~15V (12V nominal) Current consumption: 200 mA Max. Working temperature: -20~65°C Storage temperature: -35~85°C Diameter: 22mm/0.87" Obstacle detection: 150cm/59 inches from bumper (post dia. 80mm/3.15 inches) Reliability over time: meets stringent automotive standards Technical parameters: Detection distance: 0.3m/0.4m ~ 2.5m Alarm distance: 0.3m/0.4m ~ 1.5m Working frequency: 40kHz Working voltage: 12V DC Consumption current: 20-200mA Working temperature: -30~ +70°C Alarm volume: 70 ~ 85dB (at 30cm) Maximum power: 2W IMPORTANT NOTICE: This device has been designed to assist drivers and should not be relied upon as infallible. Always maneuver vehicles with caution and use common sense. Move your car slowly for your safety and that of others. Always stop the vehicle when the hazard warning is activated to account for movement inertia. Periodically check the functionality of the sensors and keep them clean at all times. In adverse weather such as rain, snow, or ice, the sensors may experience a temporary decrease in sensitivity of approximately 20%. Drive with even greater caution until conditions improve. Notes: 1. There may be slight size deviations due to manual measurement, different measuring methods, and tools. 2. The image may not accurately represent the actual color of the item due to variations in lighting, angles, and monitor displays. 1 X LED Display Indicator 1 X Command Module 4 X Ultrasonic Sensors 1 X Power Supply Cable 1 X Hole Borer 1 X Accessory Kit 1 X Instruction Manual