SONOFF SenseGuard DW Gen2 Zigbee Door Sensor, Open/Close Monitoring, & Window Alarm for Home Security, Phone Alert, Tamper Automation, Works with Assistant Alexa, 4-pack

Reliable Zigbee window sensor for open/close surveillance The Zigbee window sensor reliably detects the opening and closing of doors or windows. Ideal as a window contact for smart home automations, status queries and everyday applications in the networked home. AAA Battery Operated - Durable & Low Maintenance Operated with standard AAA batteries for a long run time and stable performance. Easy to replace, cost-effective and ideal for permanent smart home use. Flexible mounting for various doors and windows. Supports horizontal and vertical magnetic mounting with up to 30 mm detection distance. Ideal for wide door gaps, narrow window frames as well as apartments, garage doors and office applications in the smart home. Smart Home Automations & Versatile Application Scenarios Requires a Zigbee Hub, compatible with Home Assistant, Alexa and SmartThings. Changes to open/close status can trigger automations, e.g. Turn on light, voice prompts, camera recording or scenes in home assistant. Ideal for windows, doors and balcony doors as well as for special applications such as window contact switches for cooker hood, heating control, automatic ventilation and energy saving. Sabotage detection for added security in the smart home Integrated sabotage detection detects removal or manipulation of the sensor and sends status changes to the smart home system – ideal for reliable monitoring and stable automation.

Accurate Open/Close Monitoring & AAA Battery Powered: The sensor requires a Zigbee hub to operate. You can monitor door or window open/close status via App and receive instant phone alerts. Powered by replaceable AAA batteries for long-lasting, stable performance. Tamper Alert & Instant Phone Notification: Built-in tamper-prevent button allows you to receive real-time phone alerts when the device is removed, enhancing door security. Smart Automation for Home Security and more: The sensor requires a Zigbee hub to operate. When the open/close/tamper status changes, it can trigger smart scenes such as alarms when open, camera recording, smart lights on, or voice notifications. Perfect for home security, child safety, pet monitoring, and energy-saving automation. Versatile Installation to Fit Most Doors & Windows: Supports horizontal and vertical magnet installation with up to 30mm detection distance. Ideal for wide door gaps, narrow door frames, apartments, garages, and office security setups. Compatible with other Zigbee Ecosystems: Easily integrates with Home Assistant via SONOFF Zigbee Dongles and works with Alexa and SmartThings through compatible Zigbee hubs.