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Product at a glance

Programmable Room Thermostats

Mains and battery powered programmable room thermostats designed for ease of use with a unique 3 button user interface. ThermoPlus allows a high and low temperature setting to be pre-programmed with simple user overrides available for the user.

ThermoPlus has voltage free contacts and is ideal for use with combi boilers.


  • Simple 3 button operation
  • Colour coded, bright LED Warm / Cool display and Braille markings on the main override buttons
  • Preset clock
  • Automatic BST/GMT time change
  • Preset or custom heating profiles
  • Back lit LCD display
  • Audible and tactile feedback
  • Fixed hypothermia protection (PRT1)
  • Frost protection setting


Contact rating (1) Amps 230-240V
Contact type Micro disconnection Voltage Free
Supply AS1/PRT1 – 230V AC 50Hz AS2 – 3 x AA (LR6) batteries
Reserve battery type Lithium battery
Pollution degree Degree 2
Double insulated Yes
Enclosure protection IP30
Operating temperature range °C to 40 °C
Temperature control range +5 °C to +30 °C
Standby temperature +5 °C to +10 °C
Case material Thermoplastic flame retardant
Dimensions 120 x 90 x 32 mm
Display Liquid Crystal, back lit
Clock 24 Hour
Displayed time adjustments 1 minute steps
Switched time adjustments 15 minute steps
Operating periods Warm – 3 per day
Programme settings Auto, Standby
Override Instant Warm / Cool
Mounting AS1/PRT1 – 6 pin plate As2 – Standard wall box fixing
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