Some flammable gases are lighter than air. If a transmitter is installed close to the ceiling, it can be connected to the remote control by a fixed installed cable with plug connection. Thus, all adjustments can be made comfortably from floor level. The control panel can be used to control several transmitters.

When using transmitters without display, the remote control shows the current values on its own display. However, the display of the remote control always shows the values of the transmitter display exactly.  Inspection, maintenance and adjustment are therefore greatly simplified.