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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.




Feature DT-B PRT-B
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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