Battery-Powered Convenience: Operates with 2 AAA dry batteries, making installation simple and maintenance easy Real-Time Monitoring: Check the status of doors and windows in real-time, ensuring your home is always secure History Records: View the history of door and window activity through the Tuya Smart App, keeping you informed of all events Smart App Notifications: Receive instant alerts on your phone via the Tuya app, keeping you updated on any changes Voice Assistant Compatibility: Supports Amazon Alexa and Google Assistant for seamless integration into your smart home ecosystem Versatile Applications: Ideal for doors, windows, drawers, etc. Low Battery Alerts: Get notified when the battery is running low, ensuring uninterrupted protection Smart Automation: Create intelligent interactions with other smart devices in your home for enhanced security Loud Alarm: The alarm emits a sound of up to 90dB within 1 meter, effectively alerting you to any unauthorized access Specifications: Static Current: ≤55uA Low Voltage Alarm: ≤2.4V Magnetic Control Distance: ≤15mm Operating Temperature: -10℃~+50℃ Battery: 2 x AAA battery (not included) Alarm Current: ≤180mA WiFi: 802.11 b/g/n Sound Level: ≤90dB at 1 meter Operating Humidity: Maximum 95% RH