XH-W1219 12V Digital Temperature Controller

🌡️ XH-W1219 Digital Temperature Controller (12V)
🧩 Overview
Compact digital thermostat controller module
Controls heating or cooling devices automatically
Features dual LED display (temperature + set value)
Widely used in incubators, HVAC, and DIY automation
⚙️ Working Principle
NTC 10K temperature probe senses temperature
Controller compares with set temperature (setpoint)
Based on mode:
Heating → turns ON when temperature drops
Cooling → turns ON when temperature rises
Relay switches load accordingly
👉 Works as an automatic thermostat system
📊 Key Specifications
🔹 Input Voltage: 12V DC
🔹 Temperature Range: -50°C to 110°C
🔹 Sensor Type: NTC 10K waterproof probe
🔹 Accuracy: ±0.1°C
🔹 Output: Relay (10A max)
🔹 Hysteresis Range: 0.1°C – 30°C
🔹 Delay Time: 0 – 10 minutes
🔹 Display: Dual LED (Red & Green)
🔌 Pin / Terminal Configuration
🔴 VCC → 12V supply
⚫ GND → Ground
🔹 K0 / K1 → Relay output terminals
🌡️ Sensor port → NTC temperature probe
🔄 Features
Dual display (current temp + set temp)
Supports heating & cooling modes
Adjustable hysteresis (temperature gap)
Built-in high-temperature alarm
Settings saved in non-volatile memory
Easy control using 3 buttons (SET, +, -)
⚙️ Key Settings (Menu)
🔹 P0: Mode (Heating / Cooling)
🔹 P1: Hysteresis (difference)
🔹 P2: Max temperature limit
🔹 P3: Min temperature limit
🔹 P4: Calibration offset
🔹 P5: Delay start
🔹 P6: High temperature alarm
🛠️ Applications
Egg incubators 🐣
Aquarium temperature control 🐟
HVAC systems 🌬️
Refrigeration & cooling systems ❄️
3D printer temperature control
DIY automation projects
⚠️ Usage Tips
Use proper 12V power supply
Ensure load is within 10A relay limit
Keep sensor away from electrical noise
Use external relay for high-power devices
Calibrate sensor if needed
✅ Advantages
Plug-and-play (no coding required)
Dual display improves usability
Accurate and stable readings
Affordable and widely used
⚠️ Limitations
Mechanical relay (limited switching life)
Not suitable for very high precision industrial use
Requires proper wiring for safety
🔍 Summary
A 12V digital thermostat controller
Measures temperature using NTC probe
Controls load via 10A relay
Ideal for DIY, incubators, and automation systems