Model Number:19JWT-BOrigin:Mainland China Smart home platform:Alexa,Tuya,Google Assistant WiFi Door Open Closed Detectors Tuya Window Sensor with App Notification Alert Contact Sensor for Home Security with Black Color Product parameters: APP name: Tuya Smart or Smart Life Work with Amazon Alexa/Google Assistance Battery type: DC3V, AAA1.5V*2 (not include in shipment) Low-battery remind function WIFI: 802.11b/g/n, 2.4G Door two way function (Detect open/close status of the door/window) Support all Tuya smart product Linkage control Working distance: 15mm Size: Main body: 68*23*19mm Permanent magnet: 43*10*14mm Low power undervoltage: 2.4V Product package included: 1xWIFI door Sensor (Not include battery) 1xsticker 1xUser manual Door opening and closing records App Notification Detect open / close status of the door / window Hands-free Voice Control Through Alexa and Google Assistant, the door opening Description of WiFi Sensor: 2.4GHz WiFi One-Key Connect Easy SetupWiFI Vision do not need home gateway, you can easily achieve the intelligent control of home appliances, simple operation, easy to use.2.4G Hz protocol is more stable, faster and more convenient. Detect door/window status When the door/window is opened or closed,the device triggered and push notification to the phone. Linked alarm with more sensors Set up the scene: away from home mode, if someone breaks in, the the device triggered and push notification to the phone., and the IP camera (not included) will shoot the video. When someone opens the door, the light turns on automatically. APP Remote Control Home is in the hands,whenever and wherever. Easy to installSmall size,easy to install Adhesive installation,can be flexibly placed in various doors, windows,drawers,etc,without destroying the appearance and structure of the original furniture Product Features: 1. Wifi+Bluetooth Dual Mode Connect to the network faster. The connection network speed is 2 times faster than only Wifi. ( Bluetooth is only used for network signal connection, Bluetooth cannot be used alone. WIFI+Bluetooth is more stable ) 2. Instant Notification Push instant notification to your phone immediately when the door or window is opened or closed. Keeping you informed all the time. 3. Alarm Alert Whenever the sensor is triggered to open/close, it will send an alarm to alert you that someone opens your door or window. 4. Alarm Recording Support checking open/close records and battery levels on the app. Never worry about missing any important moments or running out of battery. 5. Low Voltage Remind When the battery level is low, it will automatically remind you to change batteries, never worry about running out of battery. 6. Intelligent Linkage The wifi door sensor can be linked with other smart devices in the home and make your home more smart. Low advantage design to ensure long-term battery life. For example, the light will be on automatically when the door is open. (Note that the light needs to be used with WIFI switch). 7.Third-party voice support This sensor supports Amazon Alexa and Google Home Assistant. 8. Share devices You can share your added devices with your family members, so they can also monitor monitor the status of doors/windows. 9. Easy to Install: No complicated installation tools are required. The sensor can be installed with double-sided adhesive tape or screws(included) in just a few steps, and download an app "tuya" or "Smart Life" from Google Play or App Store to add the device to detect the status of your door/window.