If your wand has a Power button on the side, press it to turn the wand on.
To turn the wand off, press and release the Power button.
If your wand doesn't have a Power button on the side, turn the wand on by pressing the big green button. You'll know it's on when you hear instructions.
To turn the Kibeam Wand off, press and hold the small red button for about 4 seconds, until the orbs turn off.