All our parts come with 12 months warranty from the date of purchase. See T&C.
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All our parts come with 12 months warranty from the date of purchase. See T&C.
Next Day Delivery
Available now
Get in touch

GL.510 Grasslin Thermio™ essential – Thermio™ essential Srf Digital Room Thermostat

£81.78 (inc. VAT)
Stock Status: Sold Out
Sorry, this item is out of stock


The thermio™ essential smart is a digital room thermostat of ErP class IV that can be programmed and operated easily and conveniently with a free app. Thanks to the integrated Bluetooth functionality, temperature profiles and schedules created on a mobile device can be transmitted and adapted easily and simply to the thermio™ essential smart via Bluetooth. This allows individual temperature profiles to be implemented easily, lowered automatically and thereby significantly reduce heating costs – without any loss of convenience. Of course the thermio™ essential smart can also be operated without the app: A large LC display and a manual ON/OFF switch make the room thermostat easy to operate.


  • Long battery life through efficient energy management
  • Needs-based and fast temperature regulationwithout deviation ensures high energy efficiency
  • Convenient, automatic change from summer to winter time
  • Monitoring the battery status and display with the required battery change
  • The frost protection function prevents the freezing of radiators or icing of piping, even when switched OFF
  • Effective security against unauthorised operation, e.g. in public spaces
  • Optimal tamper protection through PIN code protection for the service interval settings
  • Intuitive and simple operation as well as fast and convenient programming with the free app
  • Cost reduction and efficient energy management through high level of control accuracy
  • Increased comfort through a wide temperature control range of +5°C to +35 °C
  • Child-proof lock as system security for children and elderly
  • Extended scope of functions and excellent userguidance via the graphic user interface on a mobiledevice
  • Easy configuration of individual temperature profiles using remote access via Bluetooth connection
  • Short-term and need-based heating through Boost function


  • Heating systems
  • Heat pump
  • Circulating pump
  • Electric heating
  • Motorised valves
  • Actuators




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