Ultrasonic Motion Detector

The Ultrasonic Motion Detector uses ultrasonic sound waves to detect motion. (NOT INFRARED) This emits sound waves at a frequency higher than humans are able to hear – typically in the range 30kHz to 10MHz. Transducers comprise a pair of devices, one is a transmitter and one is a receiver. A sound pulse is sent out at a given frequency and it is reflected and captured by the receiver. To use just point it at the area you wish to detect motion in. INCLUDES FREE MINI TRIPOD

- The unit reacts as objects move closer or away from the unit
- The closer the object gets, the faster the beeps; the further away, the slower the beeps
- It has a red LED that activates each time it detects motion
- The unit has an adjustable sensitivity control and can detect motion up to 8 ft
- Great for monitoring potential movement of objects
- Runs off one 9 volt battery (not included)