Reversing radar with premium components and circuitry designed to prevent system overheating and overloading, ensuring durability and longevity. The car reversing sensor system includes 4 ultra sensors with dual CPU and advanced chipset for improved coverage and detection from 0 cm to 2.5 m. Capable of detecting small children and low obstacles to help avoid collisions around the moving vehicle. The alarm emits varying sound frequencies based on the distance to an object; the closer the obstacle, the faster and louder the ble alert, enhancing safety for passengers and pedestrians. Easy installation: Mount the sensors on your vehicle using the included hole saw and connect each of the 4 sensors to the corresponding ABCD socket on the main control box. Safe parking is essential. Have you experienced difficulty judging distance while reversing? Can you see objects clearly in the rearview camera but misjudge their proximity? Struggle to detect small children or unclear surroundings behind your vehicle? Eliminate these risks with reliable parking sensors that support safe and confident parking. Installation guide: Use the included hole saw to drill holes into the vehicle bumper, install the 4 parking sensors, and ensure they are securely mounted. Specifications: - Frost and rain resistant - Rated current: 20–200 mA - Power input: 9–16 V DC - Operating temperature: -30°C to +70°C - Alarm volume: 80 dB - Ultrasound frequency: 40 kHz - Detection range: 0 cm – 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 ultra sensors provide superior performance with accurate detection and wide coverage. The system alerts the driver in three stages depending on obstacle distance (0–2.5 m). Dual CPU system with built-in protection circuits prevents overheating and overloading. Resistant to interference from other wireless devices and ensures fast response. Connect each of the four sensors (A, B, C, D) to the corresponding socket on the control unit. The alarm speaker reaches up to 80 dB, providing clear ble alerts as obstacles approach. Mount the speaker on the windshield or dashboard for optimal performance.