Type: Parking Gadgets Brand: Toby''s Features - 4 sensor, double CPU and advanced chipset for enhanced coverage and detection (0-2.5m). With digital colored LED display (number & light). Help to prevent dangerous and costly collisions. Help to provide increased safety for passengers, pedestrians and family members who happen to be around the moving vehicle. Detect small children and low walls as well. Antifreeze and rain proof. Easy to install. A saw drill head included. Specifications:Rate voltage: 12V DRate current: 20-200MA Detecting distance: 0.3 - 2.0mUltrasonic frequency: 40KHzControl moudle working temperature: -30 - 80 celsius degree Display working temperature: -20 - 70 celsius degree Sensor Diameter: 22mm Range Distance Alarm Package Included:1 x Main Control Box1 x Sound buzzer4 x Parking Sensors with 2.5m wire1 x Power Cable1 x Hole Saw.