- Including indicating lamp and robust rotary switch.
- Position 0 = off
- Position 1 = 1/3 power
- Position 2 = 2/3 power
- Position 3 = 3/3 power
Application for air heater type 841: E.g. punctiform heating of working places, thermal shielding at doors, heating of building containers, and dressing rooms. Consisting of a sheet steel housing, built-in high-capacity heating elements, not brought to red heat an axial-flow fan.