Winner
Data from Amazon and official Bosch and Shelly sites.
2026 verdict
In 2026, Bosch Smart radiator thermostat II [+M] is the better overall pick. Its strongest advantages show up in rating, integrations, and frost protection, with child lock helping widen the gap. Shelly BLU TRV is still relevant if you care most about price and warranty, but Bosch Smart radiator thermostat II [+M] is the stronger recommendation overall. For most setups, Bosch Smart radiator thermostat II [+M] is the smarter buy.
| Feature | Bosch Smart radiator thermostat II [+M] | Shelly BLU TRV | Winner |
|---|---|---|---|
| Price | €70.47 | €46.45 | Shelly BLU TRV |
| Rating | 4.2 | 3.7 | Bosch Smart radiator thermostat II [+M] |
| Warranty | 1 year | 2 years | Shelly BLU TRV |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | None | Bosch Smart radiator thermostat II [+M] |
| Frost Protection | YES | NO | Bosch Smart radiator thermostat II [+M] |
| Child Lock | YES | NO | Bosch Smart radiator thermostat II [+M] |
| Battery Life | 2 years | 2 years | Tie |
| Connectivity | Zigbee, Thread Protocol | 2.4 GHz Wifi, Bluetooth | Tie |
| Screen | YES | YES | Tie |
| Sensors | Temperature | Temperature | Tie |
| Geofencing | NO | NO | Tie |
Winner
17% OFF
€84.95
€70.47
- + Rating: 4.2
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- + Frost Protection: YES
- - Price: €70.47 vs €46.45
- - Warranty: 1 year vs 2 years
13% OFF
€53.43
€46.45
- + Price: €46.45
- + Warranty: 2 years
- - Rating: 3.7 vs 4.2
- - Integrations: None vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
Frequently Asked Questions (FAQ)
- Which is better overall: Bosch Smart radiator thermostat II [+M] or Shelly BLU TRV?
- Bosch Smart radiator thermostat II [+M] has the stronger overall profile in this comparison, especially for rating, integrations, and frost protection.
- What is the biggest difference between Bosch Smart radiator thermostat II [+M] and Shelly BLU TRV?
- Price is one of the clearest differences: Bosch Smart radiator thermostat II [+M] lists €70.47, while Shelly BLU TRV lists €46.45.
- Which one looks better on price?
- Bosch Smart radiator thermostat II [+M] is listed at €70.47, while Shelly BLU TRV is listed at €46.45. Shelly BLU TRV (better spec).
- Who should buy Bosch Smart radiator thermostat II [+M]?
- Choose Bosch Smart radiator thermostat II [+M] if your priority is rating and integrations and that matters more than price.
- Who should buy Shelly BLU TRV?
- Choose Shelly BLU TRV if your priority is price and warranty and that matters more than rating.
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