Alpina - Intelligent window opening sensor Zigbee network

Zigbee smart door or window sensor by Alpina. Recognizes if a door or window is open or closed. This is an excellent way to feel safe in your own home and to control the situation while you are away from your own apartment or house. Pair it with the Alpina Smart Zigbee gateway to connect with other products in the Alpina Smart lineup. Specification: - Detection distance : ? 15 mm - Operating voltage : 3 V - Power supply : 1x CR2 lithium battery - Zigbee wireless distance : Up to 90 m (unobstructed) - Wireless technology (protocol) : Zigbee (IEEE 802.15.4) - Compatibility : Alpina Smart Zigbee Gateway - Dimensions : 57x28x18 mm, 31x16x12 mm - Frequency range : 2405-2480 MHz - Maximum RF output power : 6,289 dBm - Antenna gain : 2 dBi