Sonoff DW2 Wi-Fi Wireless Door/Window Sensor

Key Features of SONOFF DW2 WiFi Wireless Door/Window Sensor:
No Gateway Required: Connect directly to the app via Bluetooth for pairing and control the device through WiFi (802.11 b 2.4GHz) without needing a gateway.
Low-Battery Reminder: Stay informed with app notifications when the battery level is low, ensuring uninterrupted operation and timely replacement.
3-Month History Records: Automatically stores 3 months of history data, allowing you to review past activity and monitor patterns over time.
Real-Time Status Sync: Check the current status of your doors or windows directly through the app, ensuring instant updates and peace of mind.
Camera Binding Option: Link with a security camera to capture video or snapshots when the sensor is triggered, enhancing your home security setup.
Easy Installation: Simple peel-and-stick design allows effortless installation on doors and windows, eliminating the need for complex tools or wiring.
Battery-Powered Convenience: Operates on 2 x AAA batteries (not included), providing reliable performance with easy replacement.
Smart Integration: Seamlessly integrates with your smart home system, automating lights, alarms, or other devices when a door or window is opened.