XH-W1219 Dual Display Digital Temperature Controller

The XH-W1219 is a compact 12 V digital temperature controller with a dual LED display, designed for automatic heating or cooling control. It can display both the current measured temperature and the set trigger temperature, making it convenient for incubators, refrigerators, greenhouses, aquariums, ventilation systems, heating elements, laboratory equipment and DIY automation projects.

The controller uses a waterproof NTC10K temperature sensor, allowing temperature measurement in humid or separated environments while keeping the control module safely installed in a dry location. The built-in relay output can switch an external load according to the selected temperature setting and operating mode.

🔧 Main Features

• 🌡️ Wide temperature control range from -50 °C to +110 °C
• 🖥️ Dual LED display for easier monitoring of actual and set temperature
• 🔁 Heating and cooling modes for flexible temperature control
• 💧 Waterproof NTC10K sensor suitable for humid environments
• ⚙️ Adjustable hysteresis to prevent rapid relay switching
• ⏱️ Delayed start function for equipment protection
• 🛠️ Temperature calibration / correction function
• 🚨 High temperature alarm setting
• 🔌 Relay output up to 10 A
• 📦 Compact size for easy integration into control panels or devices

📊 Technical Specifications

Parameter	Value
Model	XH-W1219
Type	Digital temperature controller / thermostat module
Display	Dual LED display
Power supply	DC 12 V
Temperature control range	-50 °C ~ +110 °C
Control accuracy	0.1 °C
Sensor type	Waterproof NTC10K sensor
Sensor cable length	approx. 0.5 m
Output type	Relay output
Maximum relay load	up to 10 A
Hysteresis setting	0.1 °C ~ 30 °C
Delayed start	0 ~ 10 min
Temperature correction	-10 °C ~ +10 °C
High temperature alarm	-49 °C ~ +110 °C
Dimensions	approx. 60 × 43 × 16 mm
Weight	approx. 75 g

⚙️ Operating Principle

The XH-W1219 measures temperature using an external NTC10K sensor. According to the set temperature, hysteresis value and selected operating mode, the controller activates or deactivates the relay output.

It can be used as:

• a heating controller – switches a heater on when the temperature drops below the set value;
• a cooling controller – switches a fan, compressor or cooling device on when the temperature rises above the set value.

The hysteresis setting helps avoid frequent relay switching, while the delay function is useful for compressors, refrigeration equipment and other devices that require start-up protection.

🧩 Applications

The XH-W1219 is suitable for:

• incubators;
• greenhouse temperature control;
• aquarium heating systems;
• refrigeration and cooling equipment;
• fan control;
• electric heaters;
• heating elements and boiler control;
• laboratory temperature monitoring;
• household and industrial automation;
• DIY electronics and embedded control projects.

✅ Advantages

The XH-W1219 is a practical solution for users who need an affordable, compact and configurable temperature controller. Its dual display makes monitoring easier, while adjustable parameters provide more flexibility than basic mechanical thermostats. With 12 V DC power supply and a relay output, it can be integrated into many automation, electronics and temperature control systems.

⚠️ Note

When switching high-power or mains-voltage loads, electrical safety requirements must be followed. For continuous operation near the relay’s maximum rating, it is recommended to use an additional contactor, fuse or external power relay.