Shelly Plus Gen3 H&T Smart Temperature and Humidity Sensor

Without a hub, without complex wiring, and with up to one year of battery life on four AA batteries, the Shelly Plus H&T Gen3 smart temperature and humidity sensor continuously monitors your indoor climate and displays real-time readings on its low-power eInk screen. Powered by the ESP-Shelly-C38F chip with 8MB of memory, it connects directly to your Wi-Fi network and can be controlled via the Shelly Smart Control app.

Always-readable eInk display, integrated web server, and real-time alerts

The eInk display of the Shelly Plus H&T Gen3 smart temperature and humidity sensor shows continuous measurements with almost zero power consumption, preserving battery life without sacrificing readability. The built-in timer allows scheduling readings at defined intervals, and the embedded web server makes data accessible directly from your browser on the local network, without needing a third-party application. Ten webhooks with two URLs per trigger allow automatically sending readings to external services or triggering actions on other devices as soon as the temperature or humidity goes out of the desired range. MQTT support ensures seamless integration with Home Assistant and open-source home automation platforms.

The Shelly Plus H&T Gen3 smart temperature and humidity sensor can be placed anywhere, without constraints

With dimensions of 70 × 70 × 26 mm without base and a weight of 47 grams, the Shelly Plus H&T Gen3 smart temperature and humidity sensor can be wall-mounted with screws or double-sided adhesive, or placed on any horizontal surface using the included base. It is available in four colors (white, mocha, ivory, and black) to blend discreetly with any decor. In case of low battery or no batteries, the USB-C port allows continuous power without interrupting monitoring. Wi-Fi range reaches 30 meters indoors and 50 meters outdoors, depending on local conditions.

FAQ

Does the Shelly Plus H&T Gen3 work without a hub or gateway?

Yes, it connects directly to your 2.4 GHz Wi-Fi network without a dedicated hub. It can be controlled via the Shelly Smart Control app and integrates via MQTT with Home Assistant and other compatible platforms.

Are batteries included in the box?

No, the four AA (LR6) 1.5V batteries are not included and must be supplied separately. The estimated battery life is approximately one year, depending on usage conditions, reading frequency, and Wi-Fi signal quality.

Can the sensor be used with USB power only, without batteries?

Yes, the USB-C port allows continuous power to the sensor without batteries. In this case, no battery is needed, and monitoring remains continuously active without interruption due to battery depletion.

Specifications