Premium Parking Sensor System With the strictest quality certificate of Germany(E1): LCD Type: 1.Model No. LF-PL01 Mini Band LCD Type: Key features: Switch on automatically when reverse gear is engaged 2/4 sensors design, Intelligent blue backlight LCD display. Digital,direction,visual and acoustic alert Embedded installation Technical data: Working Voltage: 10~ 15 V Max. Power: 3.6W Working temperature: - 35°C~ + 70 °C Detecting distance: 0.1 m ~ 1.5 m Measuring error: ±0.05 m Sensor detection angle: 60 ° Alarming Volume of built-in Siren: 80dB Alarming Volume of external Siren: 80dB Response Time: 250 ms Ultrasonic Frequency: 40KHz Current Consumption: 240~300 mA Audible/Visual Distance Indication Distance Area LCD Display Sound 1.50 to 1.10m Normal Speed Bi?Bi?Bi? 1.00 to 0.50m Low Speed Bi..Bi..Bi.. 0.40 to 0.1m Stop Bi? (solid beeping)