Reversing radar with premium components and circuitry to prevent system overheating and overloading, ensuring durability and longevity. Car reversing sensor equipped with 4 ultrasonic sensors, dual CPU, and advanced chipset for improved coverage and detection from 0 cm to 2.5 m. Can detect small children and low obstacles to help avoid collisions around the moving vehicle. The alarm sounds at different frequencies depending on the distance to an object. The closer the obstacle, the louder and faster the audible alert, increasing safety for passengers and pedestrians.Easy installation: Mount the sensors on your car using the included hole saw and connect the 4 sensors to the corresponding ABCD socket on the main control box. Safe parking is essential for every driver. Have you encountered parking challenges? Objects may appear far in the rearview camera but are actually close. Small children or nearby obstacles may not be visible. Stop these risks with parking sensors that provide safe and confident parking.Using the hole saw, drill holes in the car bumper to install the 4 parking sensors and ensure they are securely mounted.Specifications: - Frost and rain resistant - Rated current: 20200 mA - Power input: 916 V DC - Operating temperature: -30C to +70C - Alarm sound level: 80 dB - Ultrasound frequency: 40 kHz - Detection range: 0 cm to 2.5 m Package includes: - 1 x main control box - 1 x buzzer - 4 x parking sensors with 2.5 m cable - 1 x power cable - 1 x hole saw - 2 x double-sided adhesive pads - 1 x user manual 4 ultrasonic sensors with superior performance for accurate detection and wide coverage. The system alerts you in three modes based on obstacle distance (02.5 m). Anti-freeze and waterproof materials for long-term reliability. Dual CPU chipset with protection circuits to prevent overheating and overloading. No interference from other wireless devices and fast response. Simply connect the 4 sensors labeled A, B, C, D to the corresponding sockets on the control box.Alarm speaker: Parking sensor system includes an 80 dB alarm speaker for clear audible alerts as obstacles approach. The alarm increases in volume and frequency as distance decreases. Mount the speaker on the windshield or dashboard for optimal performance.