Room thermostat, normally open, AC 230 V~ Room thermostat Intended use Electronic room temperature controller for controlling electrothermal actuators for 230 V ~ (e.g. item no. TSA 230 NC WW) Control of the room temperature in closed rooms Installation in device box with dimensions according to DIN 49073 Product features Manual setting of a comfort temperature Temperature limit of the comfort temperature adjustable Manual switching off of the temperature control Input terminal for activating the setback temperature (ECO) via central clock Input terminal for activating the cooling mode via central control Manual activation of the cooling mode Internal temperature sensor Frost protection function Silent switching Temperature drop detection (calling up the frost protection temperature when the window is opened) How the controller output works: Pulse width modulation (PWM) or two-point Adaptation to valves (normally open or normally closed) Offset setting ± 3 °C (correction value for the measured temperature) Valve protection function (valve opens and closes once a week) Multi-coloured status LED Permanent operation of the LED possible for covers item no.: .. 1749 ..