The Bartec QST250 Parking Sensor Tool is designed to give a visual indication of the output signals of parking sensors using ultrasonic sensors on a range of vehicles. The extended pick lead allows a single person to operate the vehicle and test the sensors while in the driver's seat, ensuring the system can be safety tested by a service technician. The tool features wired detector extension, LCD screen, automatic test procedure, frequency meter, signal strength meter, low battery warning and auto switch off time and one year factory warranty. The kit includes four AAA batteries and a quick start guide.