Looks like an ultrasonic humidifier if I'm reading correctly; it's a little small there on the bottom right.
-Anyway, as long as you can find a way to direct the output to the cage, you should be able to use it. I use an ultrasonic humidifier, with a length of braided vinyl hose drilled into the spout (for lack of a better word), which goes into the top of the cage.
I'm not familiar with this unit, but basically, humidifiers that produce "warm" mist need to heat the water enough to produce steam....that's BOILING. Steam can burn or damage plants, surfaces or your cham. Cool mist is fine.