This small, four position rotary switch fits in a 20mm hole.
It has a white pointer on the rotating knob that can be illuminated red by
connecting 12v to 28v to the two small terminals.
Note: Polarity must be correct - one has a ‘+’ mark.
Maximum brighness will be at 28 volts.
12 volts will give reduced brighness but will still be visible in the dark.
The single 4.8mm terminal on the rear is power in and the three together are the three outlet positions .
Bezel diameter 23mm.
Front projection 9mm.
Rear projection 24mm.
Current rating 10 Amps.
MICRO THREE SPEED FAN SWITCH #SWFAN3