1.Rated voltage: 12V2。Operation Voltage range: 9-16V3.Rated Current: 20-200mA4.Detecting distance: 0-2.5m5.Ultrasonic frequency: 40KHz6.Working temperature: -30-+70a??7.Display working temperature: -20-+60a??8.Main control box size: About 9 * 6 * 2.3cmPackage include1 X Main Control Box1 X LED Display4 X Sensors1 X Power Cable1 X Hole Saw2 X Double Side Sticker1 X User Manual