This is a motion detector switch that detects movement to a distance of up to 24 feet, and TURNS ON your 12V or 24V DC device. Can be used with our 240W power amp, Ultrasound Generator and other 12/24V devices. Is rated up to 8amps current and will work with voltages as low as 5V DC. 

Great for turning ON your Ultrasound Generator or Sound/Phasor Generator automatically, and blasting the 2 or 4-legged intruders when they get close. Turns OFF automatically about 10 seconds after movement stops.