Wiring Laser Air Assist KT332N Controller

Wiring a 24 volt Laser Air Assist Solenoid to KT332N Laser Controller

Adding an external, more powerful laser air assist is a MUST DO upgrade for your CO2 laser.  There are many guides on how to do this however none of them are specific to a laser which has a Ryxon KT332N Controller.  Larger lasers use different controllers and the controller connections have a different name on them on the KT332N which may confuse some users.

I’m not doing an inclusive build of materials here. This will just cover wiring the solenoid to the controller.

You will require a 24 volt Solenoid, normally closed. Let’s look at the parts required:

Parts Needed

  • Solenoid
  • Wire – you can use any wire as long as it will handle 24 volts and about 250 degrees F.  

The solenoid wiring is not polarity specific. You should follow standard industry color coding though.


On MOST controllers one of the appropriate terminals is labelled “WIND” and every video you watch on YouTube University will show you hooking one wire to the “WIND” terminal.  Of course on the KT332N it isn’t the same.  On the KT332N the appropriate terminal is named “AUX AIR”.  Wire it as per the picture below:

Red Wire = +24 V

Black Wire = AUX AIR

Laser Air Assist Wiring
KT332N Air Assist Wiring

On the other end, again polarity doesn’t matter but I wired mine like the pic below.  Ignore the green ground wire.  There are just 2 wires going into the solenoid.

Laser Air Assist Wiring
24volt Solenoid wiring for laser air assist

Anyway, that’s it.  That is how to wire up your Laser Air Assist. “WIND” is designated “AUX AIR” on the KT332N controller.

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