Description The magnetic wireless door sensor isconvenient and practical, with excellent texture, and can serve you for a longtime without being easily damaged. The exquisite craftsmanship can serve youwell without breaking easily. This is a very practical magnetic wireless door sensor. Features -Color: White -Material: ABS -Size: 8.20X4.20X1.60cm/ 3.22X1.65X0.63inNote: random signBattery type2 x AA (not included)Stand by currentopen:28.4uA close:28.1uATrigger current43mAPairing current: 37mAWorking time4000 timesOperating temperature0 - 40 (32F - 104F)Operating Humidity20% - 85%Storage Temperature0 - 60 (32F - 140F)Storage Humidity0% - 90%Wireless Type: 2.4GHzProtocol: 802.11b/g/nWifi distance: 45m- 2.4GHz WiFi one-key connection, easyinstallation, no home gateway is needed, and can be easily achieve intelligentcontrol of household appliances. - 2.4GHz protocol is stable, fast andconvenient in use. - It will send push notification if thedoors or windows are opened or invaded by external object, and you willimmediately know that there is an abnormality in your home. - Support smartphone remote control, easyto control door or window open remotely. - Powered by 2pcs AA batteries (notincluded), low power consumption and long battery life. Packing list: 1 x door alarm