The Beam Detector consists of ST803 Master and ST803 Slave sensors. It is designed to detect intruders and trigger the siren simultaneously when the infrared beams in between are broken.

* Built in 868/923MHz Transceiver module with excellent operation range up to 250M
* Two beams detection with distance up to 30M
* Smart auto tune function will reduced power consumption to extend battery life
* Status LED indication
* IP44 design, suitable for door, window, balconies, back yard etc.
* 4 x 1.5V AA type battery operation
* Compatible with range of Everspring U-NET product
* Beam Interrupt time: 50mS - 700mS