Nest Temperature Sensor (2nd gen) vs Sonoff SNZB-02P Temperature & Humidity Sensor

The Sonoff SNZB-02P Temperature & Humidity Sensor wins, with a lower price, four-year battery life, humidity sensing, alerts, automations and support for Google Home, Alexa, Home Assistant and IFTTT. The Nest Temperature Sensor (2nd gen) is a temperature-only Nest Thermostat accessory that holds a higher owner rating.

The Sonoff is a standalone Zigbee sensor (with a hub) that measures temperature and humidity, sends alerts and drives automations, while the Nest reads temperature only and works exclusively as a Nest Thermostat companion.

The Sonoff SNZB-02P does both, sensing humidity and lasting about four years on a CR2477 cell. The Nest Temperature Sensor (2nd gen) reads temperature only and is rated for around three years on a CR2 battery.

Yes. The Sonoff SNZB-02P needs a Zigbee hub, and the Nest Temperature Sensor (2nd gen) needs a compatible Nest Thermostat, since it has no independent connectivity.

Zigbee smart-home users who want long battery life, humidity readings, alerts and automations across Home Assistant, Alexa or Google Home, and who already run a Zigbee hub.

Nest Thermostat owners who simply want their thermostat to read and prioritize a specific room's temperature, and do not need humidity, alerts or wider smart-home integration.