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Battery series

Our battery thermostats are a viable upgrade route for those with a dial thermostat working on a two wire system. The design follows our Slimline Thermostat Series with non programmable and programmable options being available.

Heatmiser DT B 495x400 PRT B High Res

Heatmiser DT-B

The Heatmiser DT-B is our non programmable battery thermostat. The DT-B is surface mount and uses 2 AAA batteries. The DT-B is normally used with an external time clock.

Programmable NO
Holiday Feature NO
Self Learning Preheat NO
Locking Feature OK
Temperature Hold Function NO

Heatmiser PRT-B

The Heatmiser PRT-B is our programmable battery thermostat, capable of accepting 4 comfort levels per day.

The PRT-B offers 5/2 day and 7 day programming.

Programmable OK
Holiday Feature OK
Self Learning Preheat OK
Locking Feature OK
Temperature Hold Function OK


Headline Features


  •  Battery Powered

    The Heatmiser DT-B and PRT-B models are powered by 2 AAA batteries.

  • Self Learning Preheat

    The Heatmiser PRT-B features optimum start, a feature were the thermostat calculates the amount of heat up time required.

  • Surface Mount

    Our battery thermostats are surface mounted for easy installation, making them perfect for the retrofit market.

  • Flexible Programming

    The Heatmiser PRT-B offers flexible programming, by offering 5/2 day and 7 day programming modes.

  • Temperature Hold

    The Heatmiser PRT-B offers a temperature hold facility, allowing a desired temperature to be held for a specific duration.

  • Holiday Feature

    The Heatmiser PRT-B offers a holiday function, whereby the PRT-B will maintain the frost temperature for the duration of the holiday.




Programmable No Yes
Optimum Start No Yes
Holiday Function No Yes
Keylock Function Yes Yes
Temperature Hold No Yes
Frost Protection Yes Yes
C/F Option Yes Yes
Built in Air Sensor Yes Yes
Accuracy 1C 1C
Supply 2 x AAA Batteries 2 x AAA Batteries
Dimensions (L,H,D) 99x86x24mm 99x86x24mm



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