Honeywell Thermostat head 8 up to 28 °C Rondostat HR20 is a versatile device that offers precise temperature control and energy efficiency for your home's heating system. With its automatic and manual operating modes, you can customize heating schedules and adjust temperatures to suit your comfort and lifestyle. The Rondostat HR20 features a clear display, making it easy to read and adjust settings. Additionally, it has a child lock function to prevent tampering and a window function that conserves energy by sensing sudden temperature drops, like when a window is opened.