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Digital thermostat W1209 - adjustable -50C +110C - module
Digital thermostat W1209 - adjustable -50C +110C - module
Digital thermostat W1209 - adjustable -50C +110C - module

Digital thermostat W1209 - adjustable -50C +110C - module

  • W1209 thermostat. Uncomplicated integrated thermostat module with which we can control the receiver up to 2300W.
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Digital thermostat W1209 - adjustable -50C +110C - module
Digital thermostat W1209 - adjustable -50C +110C - module
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Digital Thermostat W1209 - adjustable -50°C + 110ºC

Cyfrowy Termostat W1209 - regulowany -50C +110C

W1209 thermostat. Uncomplicated integrated thermostat module with which we can control the receiver up to 2300W.

  • The module has a detachable thermistor which is located in the thimble, making it waterproof, and it measures the temperature of air as well as liquids.
  • The process of setting the temperature is very simple, just press the "SET" button - then the display starts flashing and with the + and - buttons you set the desired temperature value.
  • The module has heating and cooling function: H/C, depending on the selected function, e.g. H, the relay will be on below the set value until it is reached + set, or no hysteresis.
  • However, function C or cooling, the relay will switch on above the set temperature and work until it is reached.
  • The module remembers the set value even when the power is disconnected.

Technical specifications of the W1209 thermostat

  • supply voltage 12V
  • temperature control from -50°C to 110°C
  • display resolution 0.1°C (-9.9 to 99.9°C) 1°C (remaining range)
  • output load - max 20A/12VDC 5A/250VAC = 1500W
  • nTC 10K measuring probe in a watertight thimble 29cm. cable
  • dimensions 41x49x18mm

Programming the W1209 thermostat

  • MENU - to enter the programming system, hold down the SET button for about 4-5 seconds.
  • select programming mode P0 - P6 using the + and - buttons
  • entering the selected mode confirm by pressing the SET button
  • confirm the selected value with the SET button

Programming modes P0 - P6

  • P0 - selection of C/H cooling or heating
  • P1 - hysteresis tripping range selectable from 0.5 to 15°C
  • P2 - upper temperature limit (default 110*C) range -45°C to 110°C
  • P3 - lower temperature limit (default -50*C) range -50°C to 110°C
  • P4 - thermometer calibration in the range of -7°C to 7°C (set when temperature readings are erroneous)
  • P5 - relay activation delay time in the range of 0min to 10min
  • P6 - too high temperature alarm can be set 0 to 110°C
  • switching on the + and - buttons at the same time when the supply voltage is switched on resets to the factory settings

Additional materials W1209 thermostat


  • Digital Thermostat W1209 - adjustable -50C +110C - 1 pc. + waterproof thermometer 1pc.
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Your previous questions regarding this product
Good day, Is it possible to connect a better probe to this thermistor, such as the one from the link What I mean is whether I can extend its temperature range and also thus control higher as well as lower temperatures?

Hello. First of all, the controller is able to handle such a range as it is in the technical data with the help of a thermistor with the given resistance and characteristics. We offer other controllers that give you the ability to select and set the thermocouple and temperatures used, such as REX C100, however, as of today they are not available and I am not able to say when they will be. The cost of such a PIC controller is just over 60PLN + a dedicated thermocouple.

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