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External Digital Thermostat

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Free UK Delivery Over £50

UK Mainland Only (Excludes Highlands)

All Prices include VAT

HeatPumps4Pools supply an external digital thermostat which can be used to control most heat pumps.

heat pump external digital thermostat

These digital thermostats can be used to control almost any make or model of heat pump.

They have an adjustable hysteresis - the amount that the water temperature will be allowed to drop before the heat pump will resume heating.

This can be set from 0.3 to 10c, however we would not recommend using less than 0.5c

This can be useful where a fine degree of control is required over the water temperature eg ponds.

The thermostat opens and closes a set of terminals when heat is required.

These terminals can be connected to the appropriate terminals on the heat pump to allow external control.

Please contact us for more information.

The unit needs a 240v power supply and is not waterproof, so needs to be located indoors in a dry area

It comes with a 2m cable with a good quality water temperature probe.

heat pump external digital thermostat


The probe needs to be in the pond/pool water so it can measure its temperature.

The specificaitons are:-

  • Measurement range: -50 to +99°C
  • Mounting size:71*29mm
  • Can Auto switch between refrigerating and heating
  • Adjustable hysteresis (difference) between 0.3 and 10c (0.5c default)
  • Compressor delay time option (default 3 mins)
  • Temperature calibration option (from -10 to +10c)
  • Cable length 2m with probe
  • Voltage:220VAC±10%
  • Maximum relay contact capacity: Cool 10A;Heat 10A
  • Resolution: 0.1oC;
  • Accuracy: ±1oC (-50~70oC);Sensor error delay: 1 minute
  • Power supply: 110V-220VAC±10%, 50/60Hz;
  • Power consumption: =3W;


  • Front panel size75(L)×34.5(W)mm;
  • Mounting size:71(L)×29(W)mm;
  • Product size75(L)×34.5(W)×85(D)mm;
  • sensor length:2m (including the probe).

Package include:

  • 1 x Digital Temperature Controller
  • 1 x Temperature sensor probe with cable
  • 1 x Instruction Manual


Price includes FREE UK Delivery

heat pump external digital thermostat


heat pump external digital thermostat


Product Literature

Please click the links below to download pdf  

Duratech             BrochureExternal Digital Thermostat Instructions
  • Model: External Digital Thermostat
  • Shipping Weight: 1kgs
  • Manufactured by: HeatPumps4Pools