W1209 DC 12V Digital Temperature Controller Thermostat Module NTC Sensor Relay

🌡️ W1209 DC 12V Digital Temperature Controller Thermostat Module | AuscomTech

The W1209 Temperature Controller is a compact and reliable digital thermostat module designed for precise temperature monitoring and automatic control of heating or cooling equipment.

Powered by DC 12V and featuring a 10A relay output, the W1209 can directly control loads such as heaters, fans, refrigeration devices, and other temperature-dependent systems. It includes a waterproof NTC temperature probe, a clear 3-digit LED display, and simple push-button programming.

This module supports both heating and cooling modes, adjustable hysteresis, delay protection, temperature calibration, and alarm limits, making it ideal for DIY projects, automation systems, and embedded control applications.

⭐ Key Features

🌡️ Heating & Cooling Control
Selectable heating or cooling mode with automatic relay switching based on set temperature.

🎯 High Measurement Accuracy
Temperature measurement and control accuracy of ±0.1 °C.

🔌 DC 12V Powered
Low-voltage operation suitable for automotive, battery, and embedded systems.

🔁 10A Relay Output
Single relay channel rated up to 10A, suitable for switching AC or DC loads (within relay limits).

📟 Digital LED Display
Bright 3-digit LED display shows real-time temperature and parameter values.

🧠 Advanced Parameter Functions
Supports hysteresis adjustment, temperature calibration, delay start protection, alarm limits, and factory reset.

💧 Waterproof NTC Sensor Included
Supplied with a 10K NTC waterproof stainless-steel probe for reliable sensing.

📊 Technical Specifications

• Model: W1209

• Supply Voltage: DC 12V

• Current Consumption:

  • Static: ≤35 mA

  • Relay active: ≤65 mA

• Temperature Range: -50 °C to +110 °C

• Control Accuracy: ±0.1 °C

• Display Resolution: 0.1 °C

• Refresh Rate: 0.5 seconds

• Sensor Type: NTC 10K (0.5%) waterproof probe

• Relay Output: 1 × relay, up to 10A

• Operating Environment:

  • Temperature: -10 °C to +60 °C

  • Humidity: 20–85% RH

• Board Size: approx. 49 × 40 × 14 mm

• Weight: approx. 24 g

⚙️ Control Functions (Menu Overview)

• P0 – Heating / Cooling mode selection

• P1 – Hysteresis (0.1–30 °C)

• P2 – Upper temperature limit

• P3 – Lower temperature limit

• P4 – Temperature calibration (±7 °C)

• P5 – Delay start time (0–600 seconds)

• P6 – Buzzer control (not active on this version)

• P7 – High temperature alarm

• P8 – Restore factory settings

🧩 Typical Applications

• Incubators and brooders

• Aquarium and fish tank temperature control

• Reptile enclosures and terrariums

• Home brewing and fermentation

• Refrigeration and cooling systems

• Fans, heaters, and DIY automation projects

• Embedded temperature-based control systems

⚠️ Important Notes

• Requires DC 12V power supply (not included)

• Relay output must not exceed rated voltage/current

• Suitable for clean, dry environments

• Always verify wiring before applying power

📦 Package Includes

• 1 × W1209 DC 12V Temperature Controller Module

• 1 × Waterproof NTC Temperature Probe