 Built-in 868/923MHz transceiver module with excellent operation range up to 250 M

 Detection range: 110? by 12 m

 Low battery LED indication

 Tamperproof protection

 Sensitivity adjustment for false alarm immunity

 Hour-by-hour auto report of proper functioning

 Operate by three 1.5 V AA type battery packs

 Compatible with all Everspring U-NET series alarm and home automation systems