Compatibility with multiple systems: The rotary knob digital room thermostat integrates with electric heating, hot water heating, and gas boilers to support an indoor climate in your home. Dual sensor options: It offers a builtin aluminum sensor plus a 300 cm long external sensor, providing flexibility to monitor temperature where it matters and to match your room layout. Precise control: Set your target temperature within 5 to 40 C, with adjustments precise to 5 C, and use the calibration feature to align the displayed temperature with the actual room temperature. Clear LED indicator: A builtin LED shows operation status, illuminating red when the heater is active for quick ataglance monitoring. Use scenarios retrofit a gas boiler or electric heating system in a home or apartment to maintain comfortable, consistent temperatures while potentially reducing energy use. place the external sensor in a seating area or distant part of a room up to 300 cm away from the main unit to ensure accurate readings and stable comfort in openplan or larger spaces. install in a room where the sensor needs to be positioned away from heat sources or direct sunlight to improve measurement accuracy while using the builtin sensor for regular monitoring.