The Vent-Axia TX7PL Panel Fan is suitable for mounting at any angle in internal partitions, ceilings, ducts and, with louvre grilles, through external walls. When installed only the louvre grille is visible. The range features a unique speed control pack which enables high, medium or low speed to be reset to suit a specific room size or required duty. T-Series controllers may be used with this model to obtain a choice of speeds, reversible airflow direction and automatic sensor operation. When used with a controller, the speed control pack is removed from the T-Series fan and fitted into the 3-pin socket in the back of the controller.   The Vent-Axia Ecotronic controller gives even greater running economy with its minimum speed setting on ‘E’ mode and infinitely variable speed control. For this controller the speed control pack remains in the fan.   The panel fan is suitable for operation in ambient temperatures from -40°C to +50°C. Fitted with Standard Thermal Overload Protection (S.T.O.P). Supply voltage: 220-240V/1/50Hz. A connector Top Socket is standard on all T-Series fans allowing fast and trouble-free mains connection.   With energy saving in mind, panel kits are supplied complete with an integral instantaneous automatic louvre shutter concealed behind the interior grille. It will operate on both intake and extract and at any angle of mounting.   When the fan is used with a T-Series or Ecotronic controller, the shutter can be set open with the fan motor switched off to provide natural ventilation without the security risk of an open window.