Parking sensor system Main features: Bibi alarm sound; Digital distance display ; Close-fitting installation; Insert-in ultrasonic sensors; Left-right obstruction identification; 3 colors alarm; Display size:78.5*28*21mm Tech. Specifications: Rated voltage:12v Operating voltage range:10.516v dc Rated current:10ma150ma Detection distance:0.21.5(m) Ultrasonic frequency:40khz Working temperature of display:-30+70� 20 set per caton 15 / 16 kgs, Dimension: 44cm x 34cm x 29cm