This rotary knob digital room thermostat works with electric heating, hot water heating, and gas boilers, providing an indoor climate for your home. Compatibility: Electric heating, hot water heating, and gas boilers Dual sensor options: Builtin aluminum sensor and a 300 cm long external sensor Precise control: Temperature setpoint from 5 to 40°C, precise to 5°C, with calibration feature for actual room temperature LED indicator: Clear red LED shows when the heater is active Why you need it Versatile control across different heating systems with a single device Flexible sensor setup to suit room layout and placement Simple, predictable temperature management with an option to calibrate for accuracy Visual status at a glance to confirm when heating is running Use scenarios Scenario 1: In an apartment with electric heating, install on a wall and use the builtin sensor to manage typical room temperature Scenario 2: In a home with a gas boiler and hot water heating, use the thermostat to regulate boiler operation; place the external sensor in a living area for accurate ambient measurement Scenario 3: In rooms near heat sources or with unusual temperature biases (sun exposure, drafts), position the external sensor accordingly and use calibration to align the displayed temperature with actual conditions Specifications Type: Rotary knob digital room thermostat Builtin sensor: Aluminum External sensor: 300 cm long Temperature range: 5–40°C Temperature step: 5°C Calibration: Yes LED indicator: Red when heater is active