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  • Large, easy to read screen suitable for all users
  • 7 day, 5/2 day or 24 hour programming options
  • OpenTherm communication, can save up to 15% gas use when fitted to an OpenTherm compatible boiler
  • DHW Domestic Hot Water setpoint control for use with S or Y plan systems
  • Optional upgrade to Wi-Fi control through mobile/tablet via the ESi WiFi hub (available as an additional item from your merchant)
  • Holiday mode
  • Battery powered (included)
  • Wall mount via simple to fit bracket or Stand (both included)

● Control via your smart device to help minimise energy usage saving money on bills
● Delayed Start & TPI Technology for maximum energy savings
● 7 day, 5/2 or 24 hour operation offering full flexibility over your heating control
● Wall mounted for a neat finish within the home
● Automatic summer/winter time change
● Easy to use and quick to install
● Holiday Mode to allow control when you’re away saving energy, lowering costs
●3-year warranty for complete peace of mind
●ErP class 4 energy rating for maximum energy efficiency

  • Opentherm communication which can save up to 15% gas when connected to an Opentherm compliant boiler
  • A true Smart thermostat which combines both automation and optimisation features to reduce gas use
  • Control one heating zone and hot water via an ESi WiFi or traditional cylinder thermostat
  • Simple and quick to install with RF connectivity reducing the need to run cables through the property
  • Control via device or Alexa from anywhere saving money by not heating an empty house
  • Holiday mode to allow control when away from home and switch on remotely to return to a warm home
  • Suitable for use with Air Source Heat Pumps to futureproof your heating system
  • Boiler plus compliant featuring delayed start technology for maximum energy savings
  • 7 day, 5/2 or 24 hour operation offering full flexibility over your heating & hot water control
  • Landlord service reminder, ideal for social housing or rental properties
  • Automatic summer/winter time change
  • 3-year warranty for complete peace of mind
  • ErP class 5 energy rating for maximum energy efficiency