Blue backlight LCD displaycar parking sensor syste

Blue backlight LCD displaycar parking sensor system (Model NO. MP-612A) Description: -Blue backlight LCD display; -Stage by Stage(BI...BI...BI. BI BIBI) sound alarm; -Vivid feature display when park working; -Mute function; -Anti freezing function, perfect performance under cold weather; -2/4/6/8 sensors available; -All sensor color availabel; -Waterproof function optional; -Human Voice optional. Specification: Working voltage: DC12V± 2V Input: 5W(max) Beeper: 80dB Working temperature: -40º C to +80º C Frequency: 40KHz Detection distance: 2.5m Display distance : 0.3m 2.0m Alarm distance : 0.3m 1.5m