Features: 1) Digital LED showing obstacle distance 2) Reports the distance with voice 3) Musical alarm 4) Crescent shaped digital display screen 5) All kinds of sensor colors and styles are available 6) High quality and easy to install 7) Color LCD screen Parameters: 1) Voltage: 9 to 15V 2) Range:0.3 to 2.5m 3) Temperature: -30 to 70°C 4) Input: ≤2W