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Small rectangular sensor in matte mocha finish with e-paper display

Shelly

Shelly H&T Gen 3 Smart Sensor Mocha

SKU CH-JW66-J378Y

Wi-Fi and Bluetooth temperature and humidity sensor in Mocha with e-paper display, USB-C power and no hub required

  • ColorMocha
  • ProtocolBluetooth
  • TypeTemperature & Humidity

Color Mocha

  • Monitors nursery temperature and humidity for safer baby sleep
  • Automates bathroom fan via Shelly Plus 1 when humidity rises
  • Triggers heater through Shelly Plug before temperature drops
  • E-paper display shows readings clearly with minimal battery use
  • Powered by Shelly chip with 8 MB memory for faster response

Shelly H&T Gen 3 Smart Sensor Mocha

The Shelly H&T Gen 3 is a Wi-Fi and Bluetooth temperature and humidity sensor designed for home environment monitoring. It features an e-paper display with a built-in clock and operates via a USB-C power connection. The device uses the Shelly chip with 8 MB memory and supports future Matter upgrades through the Shelly Smart Control app.

Ideal for nursery climate monitoring

Parents can track nursery conditions and receive alerts to maintain safe sleep environments. It integrates with Shelly Plus 1 to trigger fans when high humidity is detected. Buyers needing wired Ethernet connectivity or a sensor that runs solely on replaceable batteries without USB power should consider other options.

Wireless protocol: Wi-Fi

The sensor communicates over both Wi-Fi and Bluetooth, enabling direct app pairing and integration into wider Shelly ecosystems without a separate hub. This dual-radio design supports local control and cloud access for alerts and scene automation. Ensure your home network covers the installation location for reliable operation.

Highlights

  • Monitors nursery temperature and humidity for safer baby sleep
  • Automates bathroom fan via Shelly Plus 1 when humidity rises
  • Triggers heater through Shelly Plug before temperature drops
  • E-paper display shows readings clearly with minimal battery use
  • Powered by Shelly chip with 8 MB memory for faster response

Specifications

ColorMocha
ProtocolBluetooth
TypeTemperature & Humidity

Other versions of this model

3 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How do I know the e-paper display is updating with live temperature and humidity readings after I mount it?

The display refreshes automatically whenever the sensor takes a new measurement; check that the shown values change within a few minutes of a known temperature shift.

What comes in the box and do I need a separate hub or power supply to start using it?

The sensor ships with a USB-C cable for power and wall-mount hardware; no hub is required because it connects directly via Wi-Fi and Bluetooth.

Are there different memory or colour versions of the Gen 3 sensor that I should choose between?

This model is the Mocha colour with the standard 8 MB Shelly chip; no other memory capacities or colour options are listed for this SKU.

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