The XH-W1209 12V Digital Temperature Controller Module is a compact and easy-to-use thermostat controller board used to automatically control heating or cooling devices based on a set temperature. It comes with a digital display, 3 tactile buttons for setting parameters, and an NTC temperature probe sensor for accurate temperature sensing. The onboard relay output can switch external loads like fans, heaters, Peltier modules, incubators, and water temperature control systems.
Core Module Features
• Module Type: Digital thermostat temperature controller
• Sensor Type: NTC temperature probe (wired)
• Display: 3-digit LED display (temperature + settings)
• Control Mode: Heating / Cooling control
• Output Switching: Relay based automatic ON/OFF control
Electrical & Interface
• Operating Voltage: 12V DC
• Output Type: Relay output (COM, NO, NC terminals)
• Relay Rating: Suitable for controlling external AC/DC loads (as per relay rating)
• Control Buttons: 3 tactile keys (Set / Up / Down)
• Sensor Connector: Plug type socket for probe sensor
Performance & Detection
• Temperature Range: Wide range support (depends on probe and module settings)
• Adjustable Setpoint: User can set required ON/OFF temperature
• Hysteresis Control: Adjustable difference value for stable switching
• Real-Time Monitoring: Displays current temperature continuously
• Fast Response: Suitable for automatic temperature regulation
Physical & Integration
• Compact PCB design with mounting holes
• Screw terminals for load connection
• Easy wiring for power + relay output
• Plug-and-play NTC sensor probe included
Applications
• Fan / Cooler Automation
• Heater Temperature Control
• Incubator / Egg Hatching Projects
• Aquarium / Water Heating Control
• 3D Printer Enclosure Temperature Control
• DIY Smart Thermostat Systems
Pro Tip
• Set a small hysteresis value for precise control, and higher value for relay life
• Use proper heatsink / ventilation for high power loads
• For AC loads, always use proper insulation and safety precautions
• Keep probe away from direct heater contact for accurate readings
Package Includes
• 1 × XH-W1209 Temperature Controller Module
• 1 × NTC Temperature Probe Sensor (wired)