-Supply voltage:+12V2V(DC) -Max power consumption:3.5w(max) -Work temperature:-40~+80C -Detecting distance:2.0m~0.3m -Display distance:2.0m~0.3m -Alarming distance:1.5m -Alarming volume:75dB -The parking sensor system will start automatically after the gear on the "R" -High-clear display show the digital distance and left & right direction -Four steps of alarm sound to alert the distance -Identify itself automatically and take priority of the dangerous distance alarm -Design for the whole day and anti-electromagnetism disturb