Temperature & Humidity Sensor Shelly H&T Gen3

The Shelly H&T Gen3 is a next-generation temperature and humidity sensor designed for indoor and sheltered outdoor use. It provides accurate temperature and humidity measurements, supports Wi‑Fi and Bluetooth connectivity, and can operate on four AA batteries or via USB‑C power. With a built‑in display, up to one year of free data history and compact dimensions, the Shelly H&T Gen3 fits in many locations and integrates with other Shelly devices for automated climate control.

Advantages

Shelly H&T Gen3 features an upgraded Shelly chip with 8 MB memory for improved responsiveness and future firmware updates. Dual power options (4×1.5 V AA batteries or USB‑C) allow flexible installation and over a year of battery life under typical use. The device connects directly to Wi‑Fi without a hub, supports Bluetooth for quick pairing or gateway use, stores up to one year of free data history, and includes a built‑in display for local readings.

Suitable for

• Monitoring nursery temperature and humidity
• Automating home heating with a Shelly Plug or other Shelly relays
• Controlling bathroom ventilation to prevent moisture and mold
• Indoor climate monitoring in living rooms, bedrooms, basements or greenhouses

Key specifications

• Connectivity: Wi‑Fi and Bluetooth
• Power: 4 × 1.5 V AA batteries or USB‑C power
• Memory: 8 MB (Shelly chip)
• Data history: up to 1 year of free storage
• Built‑in display: Yes
• Dimensions (approx.): 70 × 45 × 70 mm
• Compatibility: Alexa, Google Home, Android, iOS

How to use

Place the Shelly H&T Gen3 in the desired location and power it either with four AA batteries or a USB‑C cable. Connect the device to your Wi‑Fi network using the Shelly app or perform a quick Bluetooth pairing for initial setup. Once connected, view live temperature and humidity readings on the device display or in the app, configure alerts and create automation scenes that link the sensor to other Shelly devices such as plugs or relays for climate control.

Recommendations

For reliable readings, avoid placing the sensor in direct sunlight, very close to heat sources or inside airtight enclosures. Use USB‑C power for continuous reporting and faster update intervals; use batteries for flexible placement where wiring is not possible.