Detection for intruders walking through the invisible infrared beams between the two sensors (T for transmitter, R for receiver); can be up to 6m / 20 ft apart

- Works with the K1/K2
- Completely wireless and battery-powered
- Weatherproof design for outdoor use
- Battery life up to 3 years
- Ideal for placements on fences, balconies, patios, backyard or pool entries, private entryways or corridors