Radiator Valves · Head to head

Bosch Smart radiator thermostat II [+M] vs Meross Thread Smart Thermostat Valve MTS155

Full Smart Radiator Valves comparison in 2026

Data from Amazon and official Bosch and Meross sites.
2026 verdict
Bosch Smart radiator thermostat II [+M] edges out Meross Thread Smart Thermostat Valve MTS155 in 2026, led by frost protection and child lock.
Bosch Smart radiator thermostat II [+M]
Winner
Bosch Smart radiator thermostat II [+M]

Last recorded price

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Its strongest advantages show up in frost protection and child lock, with its broader overall balance helping widen the gap. Meross Thread Smart Thermostat Valve MTS155 is still relevant if you care most about its specific feature mix, 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.
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FeatureBosch Smart radiator thermostat II [+M]Meross Thread Smart Thermostat Valve MTS155Winner
Frost ProtectionYESNOBosch Smart radiator thermostat II [+M]
Child LockYESNOBosch Smart radiator thermostat II [+M]
ConnectivityZigbee, Thread ProtocolBluetooth, Thread ProtocolTie
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
ScreenYESYESTie
SensorsTemperatureTemperatureTie
GeofencingNONOTie

Frequently Asked Questions

Which is better overall: Bosch Smart radiator thermostat II [+M] or Meross Thread Smart Thermostat Valve MTS155?

Bosch Smart radiator thermostat II [+M] has the stronger overall profile in this comparison, especially for frost protection and child lock.

What is the biggest difference between Bosch Smart radiator thermostat II [+M] and Meross Thread Smart Thermostat Valve MTS155?

Frost Protection is one of the clearest differences: Bosch Smart radiator thermostat II [+M] lists YES, while Meross Thread Smart Thermostat Valve MTS155 lists NO.

Who should buy Bosch Smart radiator thermostat II [+M]?

Choose Bosch Smart radiator thermostat II [+M] if your priority is frost protection and child lock and that matters more than the competing advantages.

Who should buy Meross Thread Smart Thermostat Valve MTS155?

Choose Meross Thread Smart Thermostat Valve MTS155 if your priority is its specific strengths and that matters more than frost protection.

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  • 14 Radiator Valves
  • 34 specs compared
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