Special attention: Please ensure that the installation direction of the sensor is parallel to the ground and the direction indicated on the back of the sensor is correctly facing upwards. Otherwise, there may be issues with sensor sensing. Display Screen: 6.8cm * 2.3cm Sensor's Diameter: 22 mm Features: Rate voltage: 12V DC Rate operating range: 10.5V - 16V DC Rate current: 100mA - 300mA Detecting distance: 0.3 - 2.0m Ultrasonic frequency: 40KHz Control moudle working temperature: -30 - 80 celcius degree Main control box size: 90* 61 * 22mm Package including: 1 * Main Control Box 1 * Buzzer display 4 * Parking Sensors with 2.5M Line 1 * Power Cable 2 * Double Side Sticker 1* User manuar Note: The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Jooms policies and EU Product Safety and Compliance laws.