Detect open/close status of the door/window Button for Alarm on/off Support Matter protocol,run in multi-platforms,- linkage Support App remote control and third- voice control Battery : AA*1<br><br>Battery Life ( standby ) : 1 year Wireless Protocol: Thread Wireless Frequency: 802.15.4 /PHY @ 2.400 - 2.483GHz Wireless Distance: 45M Working Temperature: 0℃ ~ 50℃(32℉ ~ 122℉) Working Humidity: 1% ~ 85%RH (non-condensing) Colour:White Material:plastic<br><br>Package Contents: 1 x Matter Thread Door Sensor Set<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.