Nest Temperature Sensor vs Sonoff SNZB-02P Temperature & Humidity Sensor

The Sonoff SNZB-02P Temperature & Humidity Sensor wins clearly, 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 is a temperature-only Nest Thermostat accessory, though it carries a higher owner rating.

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

The Sonoff SNZB-02P does both, with temperature, humidity and low-battery alerts. The Nest Temperature Sensor measures temperature only and has no alerts of its own.

The Sonoff SNZB-02P is rated for about four years on a CR2477 cell, compared with roughly two years for the Nest Temperature Sensor's CR123A.

Anyone building a Zigbee smart home who wants long battery life, humidity readings, alerts and automations across Home Assistant, Alexa or Google Home, and already runs a Zigbee hub.

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