Specialist in Climate Control Since 1945

Switchbox W9 GS+

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Switchbox for modulating regulation of 1 or more modulating air heaters based on room temperature.


  • Steel box with cylinder lock
  • One 230V power supply group per devicewith a switchbox for several devices.
  • Digital time switch with weekly programme.
  • Day and night temperature regulator.
  • Holiday switch to operate devices at the night-time temperature over longer periods.
  • Overtime timer adjustable from midnight to 6.00 a.m.
  • Selector per device for “heat / off / ventilate”.
  • Illuminated reset button per device to indicate and reset a burner trip
  • A room temperature sensor supplied separately.

Controls/to be applied for:

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