Digital room thermostat attachment consisting of a halogen-free plastic housing and an LCD display. Suitable for electronic room thermostat insert EV103010--. The room thermostat has a weekly program for manual and time-programmed temperature control in closed and dry rooms. The top unit also has an automatic summer/winter time changeover, three different operating modes (standby/comfort/night). A maximum of four operating ranges can be set per day. The heater can optionally be controlled via a normally closed or normally open contact.