There are no fancy dials or displays on the Hot Box Vaporizer; it works on the principal of the convection method, drawing hot air over the plant material which is a far more efficient method of vaporizing. The Hot Box Vaporizer is made from ceramic and contains a very powerful heating element. Simply switch the Hot Box on and wait 10-15 minutes for it to heat up. Meanwhile, grind your aromatherapy herbs and place them in the glass wand so they rest against the metal screen. Try not to over fil the wand; no more than a third full is ideal. If your herbs are especially dry you may add a drop or two of water to moisten them. Then simply place the wand over the heated element and inhale!