SONOFF SNZB-03 ZigBee Motion Sensor – Detects motion, triggers scenes and alerts; works with SONOFF ZigBee Bridge and eWeLink app.

The SONOFF SNZB-03 is a motion sensor that uses the Zigbee 3.0 protocol and requires a compatible Zigbee hub to function. It offers features like instant mobile alerts, integration with other smart devices for automated scenes (like turning on lights), and a long battery life. However, some users report issues with unreliability, such as false alarms or disconnection from the hub, especially in outdoor or challenging environments. 

• Protocol: Zigbee 3.0, requiring a compatible hub like the SONOFF ZB Bridge Pro or others like Echo Plus.
• Detection: Detects motion up to 6 meters with a 110° viewing angle. The SNZB-03P variant offers faster 5-second detection.
• Power: Powered by a CR2477 battery, which can last over 3 years for the SNZB-03P model.
• Connectivity: Can be linked to other devices through a hub to create automations, such as turning on lights when motion is detected. It also supports local control via smart scenes that continue to work even if the Wi-Fi network is down.
• Installation: Easy to install using the included 3M adhesive for indoor use.
• Security: Can be used for security purposes by triggering alarms or cameras when unauthorized entry is detected. 

• Reliability: Some users have reported issues with false alerts and the device disconnecting from the hub, necessitating re-pairing.
• Environmental factors: False positives can occur due to wind, direct sunlight, or temperature changes. It is not recommended for outdoor use due to potential issues with the elements.
• Compatibility: While it uses the standard Zigbee 3.0 protocol, a user's specific hub and its firmware can impact overall performance.