Como ligar ou desligar fan (cooler) do laser (How to turn on or off laser fan (cooler))

The fan is most often wired across the power supply to the laser module.

There is no cooling fan control or cooling fan behavior that is adjustable on a majority of diode laser engravers. When the laser is powered and controllable, the laser cooling fan is on.

This is the lowest cost, most reliable way to ensure the laser remains cool when working. If the laser stops from a power supply failure - the fan stops.

Is the noise bothersome?

good?

good