Clip-on Rearview mirror with VFD Desgin Swith on automatically when reversing gear is activated Dynamic Cartoon car icon indicating precise state of your parking 3-stage beeping mode indicating different distance A combination of rear view mirror and parking sensor Specification: Voltage: 12V DC Working Voltage Range: 10.5V ~ 16V DC Current:50mA ~ 180 mA Range of Detection: 0.2 -1.5 m Temperature for CPU: -40 ~ +80oC Temperature for Display: -20 -+70oC