For Tuya WiFi Door Sensor Window Sensor Door Magnetic Alarm Detector Features: 1.Remotely set up arming and disarming at any time through the cell phone APP 2.You can set up one-key arming and disarming,which is more convenient to use 3.For Amazon Alexa and Google Home to check whether doors and windows are open or closed 4.Share with family members for common control 5.When the device is offline,APP will remind the device offline after 30 minutes 6.The product uses 2 AAA batteries(not included),when the battery is low,the phone will remind you to replace the battery Specification: 1. Battery:2*AAA(not included) 2. Operating temperature:-10℃-50℃. 3. Wireless network type:2.4GHZ 802.11b/g/n 4. Application:For indoor 5. Product Size:70*20*25mm Package Includes: 1*WiFi Door Magnetic Sensor Note: Only include the above package products Specifications are manually tested and are for reference only Please allow 0-1cm error due to manual measurement Please make sure you don't mind before bidding Due to the difference between different monitors Pictures may not reflect the actual color of the item.Thank Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin