Sonoff SNZB-02P is a Zigbee 3.0 temperature and humidity sensor with a Swiss-made hygrometer and CR2477 coin cell power. It offers fast reporting (advertised 5s refresh) and claimed temperature accuracy (0.2°C) plus long battery life (2–4 years), making it a strong budget choice for Zigbee hubs and Home Assistant integrations — but expect occasional firmware/reporting quirks and some build/packaging flakiness reported by users.
For Zigbee users and Home Assistant hobbyists who want an inexpensive, accurate temp/humidity sensor; avoid if you need foolproof out-of-box reliability or prefer sensors with guaranteed factory battery charge.
TweakDeals earns a commission — at no extra cost to you. Learn more
Commission-funded — no extra cost to you
