Temperature controller with break contact, Z.-piece, rocker switch and LED Qx polar white, velvet. 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, standard range. Material: plastic, thermoplastic, shatterproof, halogen-free.