W1209 Temperature Control Module
- Power Supply: 12V DC
- Temperature Measurement Range: –50°C to +110°C
- Temperature Control Accuracy: ±0.1°C
- Temperature Sensor: NTC 10K Thermistor (waterproof probe)
- Output Type: Relay Output (NO)
- Relay Contact Capacity: 20A @ 14V DC / 125V AC (varies by manufacturer)
- Display: 3-digit 7-segment LED display
- Control Mode: Heating or Cooling
- Operating Humidity: 20%–85% RH
- Module Size: Approximately 48 × 40 mm
SKU:
SE-389
Categories: Sensor Modules, Temperature & Humidity Sensor
Tags: Temperature Controller, Thermostat module
Description
- The W1209 is a compact, low-cost temperature controller module commonly used in DIY and industrial applications for regulating temperature within a predefined range.
- It features an NTC 10K waterproof temperature probe that provides fast and accurate temperature readings.
- The module includes a high-current relay that can switch heating or cooling devices directly, such as heaters, fans, refrigerators, incubators, or water pumps.
- Users can easily configure temperature setpoints, hysteresis, high/low temperature limits, and calibration using three onboard push buttons.
- The bright LED display shows real-time temperature and menu parameters, making setup and monitoring simple.
- The controller supports both heating mode (relay activates when temperature drops below setpoint) and cooling mode (relay activates when temperature rises above setpoint).
- Ideal for thermostats, incubators, pet habitats, aquariums, fermentation systems, and general temperature regulation tasks.
PACKAGE INCLUDES:
- 1 × W1209 Temperature Control Module
- 1 × NTC 10K Waterproof Temperature Probe
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Applications
- Thermostats
- Incubators
- Aquariums
- Greenhouse temperature management
- Fermenters and brewing systems
- Pet enclosures and reptile habitats
- Cooling fans
- Room heaters
- Water tank temperature control
- Small-scale HVAC systems
TECHNICAL SPECIFICATIONS
| Parameter | Value |
| Operating Voltage | 12V DC |
| Temperature Range | –50°C to +110°C |
| Measurement Accuracy | ±0.1°C |
| Relay Capacity | 20A @ 14V DC / 125V AC |
| Sensor Type | NTC 10K Waterproof |
| Display | 3-digit LED |
| Control Modes | Heating / Cooling |
| Dimensions | 48 × 40 mm |
| Operating Humidity | 20% – 85% RH |

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