SONOFF SNZB-02D

Quick verdict

SONOFF's SNZB-02D adds a useful LCD to a low-cost Zigbee temperature and humidity sensor, so you get instant at-a-glance readings plus local automation data. It is a practical pick for climate balancing, dehumidifier triggers, and room comfort monitoring in Home Assistant.

Standout: Integrated LCD with local Zigbee telemetry for both visible and automated climate monitoring.

Last checked: 2026-03-22

Compatibility snapshot

Why it stands out

• built-in LCD display shows temperature and humidity at a glance
• excellent zigbee2mqtt and ZHA support — fully local
• very affordable for the feature set

Reasons to hesitate

• requires a Zigbee coordinator — no standalone use
• no native voice assistant support without Home Assistant bridging

Best for

• Home Assistant users wanting cheap, reliable temp/humidity monitoring
• Zigbee mesh networks needing environmental sensors with displays

Avoid if

• you do not have a Zigbee coordinator
• you want direct Alexa or Google Home pairing without a hub

Privacy and local-control notes

The sensor works fully locally through Zigbee coordinators such as ZHA or Zigbee2MQTT. Temperature and humidity history can remain on your own Home Assistant instance.

Home Assistant support: supported · integration path: zigbee2mqtt / ZHA.

Buying reality check

Price notes: Generally priced near entry-level sensor tiers while adding a display that many similarly priced models lack.

Compare side by side: see sensor comparisons →