Multisystem compatibility: Designed to work with electric heating, hot water heating, and gas boilers, this rotary knob digital room thermostat provides a comfortable indoor climate tailored to your home needs. Sensor options: Includes an internal aluminum sensor and a 300 cm long external sensor, giving you flexible monitoring options to suit your space. Accurate temperature control: Setpoint adjustable from 5 to 40 degrees Celsius with a calibration feature to align the thermostat reading with actual room conditions. Visual operation confirmation: A clear LED indicator lights red when heating is active, providing immediate feedback on the thermostat's status. Practical design and use: Simple rotary knob operation for quick adjustments without sacrificing reliability or precision. Use scenarios: 1) Electric heating systems in living areas: use the internal or external sensor to maintain steady comfort while minimizing energy use. 2) Homes with gas boilers: integrate with radiator or boilerbased heating to achieve precise room temperature control. 3) Large or variable spaces: place the external sensor in larger rooms or corridors to improve reading accuracy and consistent warmth. Key attributes at a glance: supports multiple heating types, flexible sensing options (internal aluminum sensor and external 300 cm sensor), reliable 5–40°C setpoint range with calibration, and clear red LED status indicator for quick operation checks.