2Pcs Personal Security Window Door Alarm Bell Wireless Sensor Door Window Burglar Alarm Safety Door Magnetic Alarm for Home & Office & Apartment

• Easy to Connect: Download the app , then add the device to the "Tuya Smart" app. Please note that it only works with 2.4 GHz WiFi. • Real-time Monitoring: When the door or window is opened or closed, the door sensor will send the notification to your smartphone immediately. You don't have to worry about your children or the elderly going out without notification. • Device Sharing: You can share the device with your family or friend and track the history of door sensor activities. If you do not want to receive a notification when you rest, you can close the alarm mode. • Easy to Install: No wiring required, insert 2 AAA batteries (not included) for the door sensor, and then install the door sensor with the double-sided adhesive tape included. • Scalability: You can add other smart security devices as needed to build a more comprehensive home security system. The product is compatible with other smart home devices and integrates seamlessly with your smart home ecosystem.