Indoor Temperature & Humidity Sensor Sonoff SNZB-02P Wireless Battery Powered

The Sonoff SNZB-02P Indoor Temperature & Humidity Sensor is a compact wireless sensor powered by a CR2477 battery. It measures temperature and humidity and reports data to compatible Zigbee 3.0 gateways. With a small footprint (45 × 45 × 17.7 mm) it can be placed anywhere indoors to monitor environmental conditions and integrate with smart-home scenes and voice assistants.

Advantages

Reports temperature and humidity changes with updates as fast as every 5 seconds, while its extended battery life exceeds four years under typical use. Daily historical records are stored in the cloud and can be viewed or downloaded from the app for trend analysis. It supports Zigbee 3.0 gateways and can provide push notifications when readings leave your preset comfort range. Works with Alexa and Google Assistant for voice queries.

Suitable for

• Monitoring temperature and humidity in living rooms, bedrooms and nurseries
• Integrating with smart scenes to control fans, humidifiers or heaters
• Remote environment checks and notifications for homes or small offices

Key specifications

• Model: Sonoff SNZB-02P
• Wireless protocol: Zigbee 3.0
• Power: CR2477 battery (included/not specified)
• Dimensions: 45 × 45 × 17.7 mm
• Data refresh: up to every 5 seconds when values change
• Cloud-based historical records (daily/monthly/6-month views) via app

How to use

Install the CR2477 battery, place the sensor indoors where you want to measure temperature and humidity, and add the device in the Sonoff or compatible Zigbee gateway app following the pairing instructions. After pairing, configure comfort thresholds in the app to receive notifications and create automation scenes that control other Zigbee devices such as fans or humidifiers. Use Alexa or Google Assistant to request the current temperature by voice once voice integration is enabled.

Recommendations

Place the sensor away from direct sunlight, heating vents or moist areas for the most accurate readings. Check app-recorded trends periodically and replace the battery when the app indicates low power to maintain continuous monitoring.