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Sensors · Boards · Modules · Kigali
W1209 is a compact and inexpensive digital temperature control module that uses an NTC thermistor as a temperature sensor. It is commonly used for applications like incubators, temperature-controlled fans, and DIY heating/cooling systems.
Temperature Range: -50°C to 110°C
Operating Voltage: 12V DC
Output Type: Relay switch (10A 250V AC / 10A 30V DC)
Temperature Sensor: NTC 10K Thermistor
Display: 3-digit 7-segment LED
Control Mode: Heating or Cooling
Hysteresis Setting: Adjustable
Delay Start Function: Yes
Buttons:
SET: Adjust parameters
+ / -: Modify values
Basic Wiring:
Power Supply (12V DC)
Connect the VCC and GND pins to a 12V power source.
Temperature Sensor
Connect the NTC thermistor to the sensor input.
Relay Output
The relay has NO (Normally Open), COM (Common), and NC (Normally Closed) terminals.
For heating: Connect your heater to NO and COM.
cooling: Connect your fan/compressor to NO and COM.
Programming Parameters (P0 - P6):
P0: Heating (H) / Cooling (C) Mode
P1: Hysteresis (0.1°C to 15°C)
P2: Upper Temperature Limit
P3: Lower Temperature Limit
P4: Temperature Correction Offset
P5: Delay Time (0 to 10 minutes)
P6: High-Temperature Alarm
