Very good90/100
- Easy installation and simple commissioning
- Compatible with Home Assistant with MQTT support
- Touch user interface with rotary control
- Relatively high price
- No window open detection
- Full functionality under Home Assistant complex
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.
Common uses:
Thermostat type | Radiator thermostats |
Suitable for | Underfloor heating |
mounting style | Wall-mounted |
Smart home | Compatible |
Smart home ecosystem | Amazon Alexa, Apple Home, Google Assistant |
Power supply | Electrical connection |
Items per sales unit | 1 pcs. |
Item number | 55654446 |
Manufacturer | Shelly |
Category | Thermostats |
Manufacturer no. | Shelly_PbS_ST_ST1820 |
Release date | 6.3.2025 |
External links |
Colour | White |
Exact colour description | White, White |
Material group | Plastic |
Thermostat type | Radiator thermostats |
Suitable for | Underfloor heating |
temperature control | Bluetooth, Wi-Fi |
Temperature range | 5° - 35° C |
Thermostat functions | Frost protection setting |
Display | Digital |
mounting style | Wall-mounted |
Smart home | Compatible |
Smart home ecosystem | Amazon Alexa, Apple Home, Google Assistant |
Country of origin | China |
CO₂ emissions | 13,23 kg |
Climate contribution | EUR 0,34 |
Power supply | Electrical connection |
Items per sales unit | 1 pcs. |
Scope of delivery | External sensor |
Length | 3.80 cm |
Width | 8.55 cm |
Height | 8.55 cm |
Weight | 0.09 kg |
Product Safety |
Length | 23 cm |
Width | 20 cm |
Height | 12 cm |
Weight | 153 g |
How often does a product of this brand in the «Thermostats» category have a defect within the first 24 months?
Source: GalaxusHow 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: GalaxusHow often is a product of this brand in the «Thermostats» category returned?
Source: Galaxus