SONOFF SNZB-02D

Quick verdict

A Zigbee temperature and humidity sensor with a built-in LCD screen — so you can actually glance at the reading without pulling out your phone. At this price point, scatter a few around the house. Fully local through zigbee2mqtt or ZHA with no cloud dependency.

Standout: Built-in LCD screen displays temperature and humidity without needing to check an app.

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

Pure Zigbee device with no cloud component. Fully local when paired with a Zigbee coordinator.

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

Buying reality check

Price notes: One of the cheapest Zigbee temp/humidity sensors with a display.

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