Shelly H&T Gen3

Quick verdict

The H&T Gen3 is one of the few battery-powered Wi-Fi sensors that actually makes sense. The e-ink display gives you a quick visual readout, and the sensor reports temperature and humidity over your local network - no cloud, no hub. Battery life is decent if you keep the reporting interval reasonable. A solid pick for room climate monitoring in a Home Assistant setup.

Standout: Battery-powered Wi-Fi sensor with an e-ink display that shows temperature and humidity without needing an app.

Notes last checked Mar 23, 2026.

Compatibility snapshot

Why it stands out

• built-in e-ink display shows current temperature and humidity at a glance without needing a phone
• battery powered with Wi-Fi - no wiring needed, just place it anywhere with Wi-Fi coverage
• native Home Assistant discovery with local API means sensor data never leaves your network

Reasons to hesitate

• battery-powered Wi-Fi means the sensor sleeps between reports - not instant updates
• Wi-Fi range can be a limitation in larger homes compared to Zigbee mesh sensors
• battery life depends heavily on reporting interval - aggressive polling drains it fast

Best for

• Home Assistant users who want a standalone temperature and humidity sensor with a readable display
• anyone monitoring room climate, wine cellars, greenhouses, or similar environments

Avoid if

• you need sub-second sensor updates - this is a battery device that reports on intervals
• you already have a dense Zigbee mesh and prefer Zigbee sensors for consistency

Privacy and local-control notes

Sensor data is transmitted locally via Wi-Fi. No cloud account required. Readings stay on your network when used with Home Assistant or MQTT.

Home Assistant support: supported · integration path: native / local.

Buying reality check

Price notes: Competitive with Zigbee sensors, and you do not need a separate hub - just Wi-Fi and Home Assistant.

Compare side by side: see sensor comparisons →

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