Premium Parking Sensor System With the strictest quality certificate of Germany(E1): Model No. LF-PL02 Quadrate LCD Type: Key features: Switch on automatically when reverse gear is engaged 4/6/8sensors design,6/8 sensor designed for detecting Obstacles from both front and rear bumper of car Intelligent blue backlight LCD display. Digital,direction,visual and acoustic alert 15 different warning phases Operating mode: ON/OFF/MUTE 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 15 different warning phases Bi?Bi?Bi? 1.00 to 0.50m Low Speed Bi..Bi..Bi.. 0.40 to 0.1m Stop Bi? (solid beeping)