Digital Thermostat Temperature Module Model XH-W1209 with Relay TEMPERATURE CONTROLLER

The XH-W1209 Digital Thermostat Temperature Controller Module is a versatile and easy-to-use temperature control solution designed for automatic heating and cooling systems. The module combines a high-accuracy digital temperature sensor, LED display, and relay switching output into a compact board suitable for DIY electronics and industrial control applications.

Powered by 12V DC, the module continuously monitors temperature using the included NTC waterproof temperature sensor and controls connected devices through an onboard 10A relay output. Users can configure the controller for either cooling or heating mode depending on the application requirements.

The module offers multiple programmable parameters including hysteresis adjustment, temperature calibration, startup delay, high-temperature alarm, and upper/lower temperature limits. With a refresh rate of 0.5 seconds and control precision of 0.1°C, it delivers stable and accurate temperature management.

Its compact size, low power consumption, and simple operation make it ideal for incubators, aquariums, refrigeration systems, greenhouse automation, and DIY thermal control projects.

Specifications

• Product Type: Digital Thermostat Temperature Controller
• Model: XH-W1209
• Power Supply: DC 12V
• Temperature Measurement Range: -50°C to 110°C
• Measurement Accuracy: 0.1°C
• Control Accuracy: 0.1°C
• Hysteresis Accuracy: 0.1°C
• Refresh Rate: 0.5 Seconds
• Sensor Type: NTC 10K Waterproof Sensor
• Relay Output: 1 Channel
• Relay Capacity: 10A
• Operating Environment Temperature: -10°C to 60°C
• Humidity Range: 20% – 85% RH
• Board Dimensions: 48 × 40 mm
• Quiescent Current: ≤35mA

Parameter Settings (Code Modes)

• P0 – Cooling / Heating Mode
  • Range: C / H
  • Default: Cooling (C)
• P1 – Hysteresis Setting
  • Range: 0.1 – 15°C
  • Default: 2°C
• P2 – Maximum Temperature Limit
  • Range: Up to 110°C
  • Default: 110°C
• P3 – Minimum Temperature Limit
  • Range: Down to -50°C
  • Default: -50°C
• P4 – Temperature Calibration
  • Range: -7°C to +7°C
  • Default: 0°C
• P5 – Delay Start Time
  • Range: 0 – 10 Minutes
  • Default: 0
• P6 – High Temperature Alarm
  • Range: 0 – 110°C
  • Default: OFF

Applications

• Temperature control systems
• Heating and cooling automation
• Incubators and hatcheries
• Aquarium temperature control
• Refrigeration systems
• Greenhouse climate control
• Water heater protection
• DIY smart home projects
• Industrial thermal monitoring
• Electronic equipment overheating protection