Falcon Ultrasonic Sensors
Product Information Set of 3-piece Ultra sonic Sensors for Car Alarm. Works by monitoring air-pressure levels. The act of opening a door or forcing a window creates a change in pressure which triggers the alarm. Simply fit a sensor to each side of the windscreen using the spring clips supplied. Fully Adjustable Sensitivity Negative Trigger Output Compatible with any alarm with a negative trigger input
Price: £14.99