[Complete Kit with Extra Batteries]This wireless smart door sensor comes ready to install With 2 additional AAA batteries, ensuring immediate operation upon delivery. Suitable for various applications including doors, , garage doors, and more, it offers versatile security solutions for your home or office. [Automated Smart Home Integration]Enhance your smart home experience by linking this sensor to other smart devices. Automatically activate lights or other connected devices when doors are opened, providing convenience and energy efficiency in one smart move. [Real-Time Alerts for Enhanced Security]Stay informed with instant notifications via the Tuya Smart or Smart Life App whenever your door or window is opened without authorization. This real-time monitoring system keeps you connected to your home's security status at all times. [Remote Monitoring Through App]Control and monitor your home security remotely with the Tuya Smart or Smart Life App. Compatible with 2.4GHz WiFi networks, this sensor ensures you're always in the loop, no matter where you are. Simply download the app using the QR code provided. [Voice Control and Easy Installation]Compatible with for and Assistant for hands-free voice control. Power Supply: Two AAA batteries Color: White Material: ABS Package Contents: 1 * Tuya Smart Door Sensor 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.