Temperature controller with break contact, central piece, rocker switch and LED K.5 Alu. Room temperature controller with break contact, central piece, rocker switch and LED, with print, control knob with temperature range limitation, with on/off switch and control LED for on, with thermal feedback, with separate connection for night-time reduction, e.g. for actuators closed when de-energized, without spreading claws, with plug-in terminals, neutral conductor required, when the set temperature is reached, the contact opens. Flush-mounted installation, surface/design program. Material: plastic, thermoplastic, shatterproof, halogen-free.