The Link2Home Smart Alarm Remote can be used to trigger other Link2Home devices. For example. it can be used to arm, disarm, or activate cameras and lighting. It has up to 80m open field Zigbee transmission (3.0). Requires smart alarm hub (L2H-SECUREGWAY). Battery powered (supplied) with low power indication. Specification: Transmission Range: 80m Battery Life: up to 24 months