Smart Wifi Door Sensor, Open/close Detector, App Control, Alerts, Alexa &. Enhance Your Home Security Effortlessly with This Smart WiFi Door Sensor. Perfectly Designed for Real-time Monitoring, It Integrates Seamlessly with Smart Platforms Like Alexa, Tuya, and Google Assistant. Equipped with a WiFi+Bluetooth Dual Mode, It Connects to Your Network at Double the Speed, Ensuring Prompt Notifications. Receive Instant Alerts Directly to Your Phone Whenever a Door or Window is Opened or Closed, So You're Always Informed. The Device Supports Alarm Recording, Allowing You to Track All Open/close Activities and Monitor Battery Levels Via the App. A Low Voltage Reminder Ensures You Never Run out of Power Unexpectedly. Its Intelligent Linkage Feature Connects with Other Smart Devices, Offering Automation Like Turning on the Lights Upon Door Entry. With Easy Adhesive Installation, It Can Be Flexibly Placed on Doors, Windows, or Drawers Without Altering Their Original Structure. Key Features: - Dual Connectivity: Fast WiFi+Bluetooth Mode for Stable Connection. - Instant Notifications: Immediate Alerts on Door/window Status. - Alarm Recording: Track Open/close Records and Battery Levels. - Low Voltage Alerts: Prompt Reminders for Battery Replacement. - Smart Integration: Compatible with Alexa and Google Home. - Easy Installation: Compact Design with Adhesive Mounting. - Input Voltage: 3V LR03 - WiFi: 802.11 B/g/n (2.4G Only) - Magnetic Control Distance: ≥15mm - Battery: DC 3V LR03 (AAA, Not Included) - Size: Main Body: 69.5*24*18.5mm | Magnet: 43*10*14mm *Note: Ensure a Stable Network Environment for Optimal Performance. Bluetooth is Required for Initial Setup.*.