Dimensions and technical data230V, 50 HertzRated current range (A) : 0.2 -6.0Industrial housing with transparent cover, lockable, connection compartment separately accessible, display of values via 2-digit digital displayVersion selectable: TDA-Control 1.5 T to TDA-Control 6 ESsafety: protection class IP54, protection class IImaximum ambient temperature 45°C, radio interference suppressionOperation: the device determines the temperature difference between floor and ceiling area by means of 2 separate semiconductor sensors (connection via two-core cable up to 150 m length), based on the set temperature difference setpoint (1-10°K), the fans are infinitely variable between the set minimum and maximum speed, if the set temperature difference is exceeded by 3°C, the device switches on the fans. The higher the temperature difference, the higher the speed of the fans, with a lower set value, the fans switch off, a combination of day/night operation is possible. Programming: all specifications, functions and settings on the unit are recorded and stored via a programming logiceither the fans can be switched off after the temperature difference has been lowered or let them continue to run at the set minute speed (minimum air exchange), thus significantly reducing operating costsHand adjustment: via a switch on the control panel, the control unit can be switched to manual operation (summer function) and used as a suitable for noise-sensitive areas TypeDesignationMaximum fan connectionTDA-Control 1.5 T2 semiconductor temperature sensor, 7-stage transformer, fully automatic control4TDA-Control 2.5 T2 semiconductor temperature sensor, 7-stage transformer, fully automatic control7TDA-Control 5.0 T2 semiconductor temperature sensor, 7-stage transformer, fully automatic control13TDA-Control 62 semiconductor temperature sensor, fully automatic Control15TDA-Control 6 E2 semiconductor temperature sensor, 7-stage transformer, fully automatic control, with digital display15