16.5mm car built-in backup radar sensor reversing assistance with audio buzzer auxiliary kit

uses advanced chipset, 0-2.0 m/6.6ft wide sensor detection range, more sensitive for detecting. the parking radar system can effectively improve the safety of reversing, to avoid the problem of collision. high grade sensor features with sand-proof, dust-proof, waterproof and frost-proof, to keep good performance even in harsh environments. easy to install and operate, no any complex procedures needed, offering you convenience. this reverse radar kit supports 40 khz ultrasonic frequency, 12v dc input power and more than 80db voice alarm..syi