W1209 Digital Temperature Controller


In stock


රු460.00 රු990.00

In stock

or 3 X රු 153.33 with Koko Koko

W1209 Digital Temperature Controller


  • Operating Voltage: 12V DC
  • Output power: 20A relay
  • Temperature Measurement Range: -50°C to +110°C
  • Control Accuracy: 0.1°C
  • Measurement Accuracy: 0.1°C
  • Control Output:Relay output: 10A (max) 250V AC or 10A (max) 30V DC
  • Display: 3-digit 7-segment LED display
  • Sensor: NTC thermistor (10kΩ, included)
  • Operating Temperature: -10°C to +60°C
  • Storage Temperature: -10°C to +70°C
  • Dimensions: 48mm x 40mm x 14mm

Pin Configuration

  • DC+: 12V power supply positive input
  • DC-: 12V power supply negative input
  • IN: Sensor input
  • NO: Normally Open relay contact
  • COM: Common relay contact
  • NC: Normally Closed relay contact


  • Temperature Control: It can be set to control heating or cooling based on the temperature setpoints.
  • LED Display: It shows the current temperature and allows for easy adjustment of setpoints and parameters.
  • Adjustable Parameters:
    • Set the desired temperature setpoint.
    • Set the hysteresis (differential) to avoid frequent switching.
    • Calibration of temperature readings.
    • Delay start for the relay to protect the controlled device.
  • Relay Output: Capable of switching high current loads, suitable for various heating and cooling devices.
  • Simple Operation: Easy to set up and use with three buttons: Set, Increase, and Decrease.
  • Compact Size: The small form factor makes it easy to integrate into various projects and enclosures.


The W1209 temperature controller can be used in a wide range of applications, including:

  • Homebrew beer fermentation temperature control
  • Aquarium temperature regulation
  • Greenhouse climate control
  • DIY incubators
  • Temperature-sensitive equipment monitoring

Setting Up the W1209

  • Power Connection: Connect the 12V DC power supply to the DC+ and DC- pins.
  • Sensor Connection: Connect the included NTC thermistor sensor to the IN pin.
  • Relay Connection: Connect the load (e.g., a heater or cooler) to the relay contacts (NO, COM, NC) according to whether you need the normally open or normally closed configuration.
  • Adjusting Settings:
    • Set Temperature: Press the “SET” button and use the “+” and “-” buttons to adjust the desired setpoint.
    • Hysteresis Setting: Long press the “SET” button to enter the parameter setting mode, use “+” and “-” to navigate to the hysteresis parameter (HC), press “SET” again, and adjust with “+” and “-“.
    • Temperature Calibration: Navigate to the calibration parameter (CA) in the parameter setting mode and adjust as needed.
How to use:
Connect the power source and the load before supplying power to the controller, which displays the temperature as a measured value.
Press the SET button, the display flashes the temperature,
Press – to set the desired temperature,
After pressing SET to confirm the return,
The controller automatically performs the relay by setting off!
Lights, LED status descriptions:
Indicator: Off The relay is switched off, always indicate the relay is closed.
LED: Shows LL is the sensor open, showing? HH is out of range, the thermostat will be forced to close the relay, and the display — as high-temperature protection.
Package Included:
1 x W1209 digital temperature controller thermostat temperature control thermostat switch plate
SKU: LKMOD00063 Category: Tag:

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