SONOFF SNZB-04P Zigbee Door and Window Opening Sensor (+Battery)

The SONOFF SNZB-04P is a Zigbee 3.0 door and window opening sensor that enhances your smart home security and automation. With a compact design and easy 3M sticker installation, it reliably detects open/close events and sends real-time notifications to your phone. Powered by a CR2477 battery, it lasts up to 5 years, minimizing maintenance.

• Zigbee 3.0 connectivity – seamless integration with compatible hubs (sold separately).
• 5-year battery life – long-lasting CR2477 battery included.
• Easy installation – 3M sticker mount, no wiring required.
• Real-time alerts – instant notifications on your smartphone.
• Tamper alarm – alerts if the sensor is removed or tampered with.
• Local automation – works even during Wi-Fi outages with Zigbee hub.
• Wide compatibility – works with Alexa, Google Home, SmartThings, Home Assistant (ZHA/Zigbee2MQTT).

Note: A Zigbee hub is required for operation (sold separately). Ideal for doors, windows, and other openings to trigger automations like lights, alarms, or camera recordings.