Shelly LinkedGo Smart floor heating thermostat

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Delivered between 12.3.2026 and 28.4.2026
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Product details

Smart thermostat, powered by Shelly - ideal for precise control of underfloor heating systems. It controls heating valves and can communicate with other heat sources. Equipped with humidity sensor, frost protection and all Shelly functions.

  • Valve control: Precisely controls the valves of your underfloor heating system (supports up to 2 A resistive load or 1 A inductive load).
  • Relay with potential-free contact: Can switch your gas boiler, pellet stove or other heat sources on and off.
  • Compatible with electric underfloor heating: The thermostat can communicate with a connected Shelly relay to automatically switch the heating on or off based on the temperature settings.
  • Frost protection function: Keeps the temperature at a minimum level during prolonged absences to prevent pipes from freezing and bursting.
  • Humidity sensor: Optimises the heating performance by taking temperature and humidity values into account.
  • Temperature and humidity offsets: Customise the thermostat readings for even more accurate results.
  • No hub required. Wi-Fi and Bluetooth connectivity.
  • Wi-Fi range extender & BLE gateway.
  • Simple and intuitive user interface.
  • Powered by Shelly: Equipped with a Shelly chip that offers all Shelly functions.
  • Highly compatible: Easy control via the Shelly Smart Control App, most platforms and protocols and voice assistants. Compatible with Alexa, Home Assistant or your favourite automation system.

Common uses:

  • Thermostat
  • Underfloor heating
  • Heating & cooling
  • Energy saving
  • Valves.

Key specifications

Power supply
Electrical connection
Thermostat type
Radiator thermostats
mounting style
Wall-mounted
Smart home ecosystem
Amazon AlexaApple HomeGoogle Assistant
Suitable for
Underfloor heating
Smart Home
Compatible
Items per sales unit
1 pcs.
Item number
55654446

General information

Manufacturer
Shelly
Category
Thermostats
Manufacturer no.
Shelly_PbS_ST_ST1820
Release date
6.3.2025
Sales rank in Category Thermostats
140 of 2890

Colour

Colour
White
Exact colour description
WhiteWhite

Material

Material group
Plastic

Thermostat properties

Thermostat type
Radiator thermostats
Suitable for
Underfloor heating
temperature control
BluetoothWi-Fi
Temperature range
5° - 35° C
Thermostat functions
Frost protection setting
Display
Digital
mounting style
Wall-mounted

Smart home features

Smart Home
Compatible
Smart home ecosystem
Amazon AlexaApple HomeGoogle Assistant

Origin

Country of origin
China

Voluntary climate contribution

CO₂-Emission
Climate contribution

Power supply

Power supply
Electrical connection

Scope of delivery

Items per sales unit
1 pcs.
Scope of delivery
External sensor

Product dimensions

Length
3.80 cm
Width
8.55 cm
Height
8.55 cm
Weight
0.09 kg

Package dimensions

Length
12.20 cm
Width
9.80 cm
Height
6.30 cm
Weight
153 g

30-day right of return
24 Months Warranty (Bring-in)
1 additional offer

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Thermostats» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 17.Eurotronic
    2.1 %
  • 18.Ecoheat
    2.2 %
  • 18.Shelly
    2.2 %
  • 20.Eve
    2.4 %
  • 21.Bosch Hausgeräte
    2.5 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 6.Danfoss
    1 day
  • 7.Bosch Hausgeräte
    2 days
  • 7.Shelly
    2 days
  • 9.tado°
    3 days
  • 10.Netatmo
    5 days

Return rate

How often is a product of this brand in the «Thermostats» category returned?

Source: Digitec Galaxus
  • 5.Homematic IP
    2.3 %
  • 6.TP-Link
    2.7 %
  • 7.Shelly
    3.4 %
  • 8.Bosch Hausgeräte
    3.7 %
  • 8.Netatmo
    3.7 %
Source: Digitec Galaxus