The module is a capacitive touch switch module based on touch detection IC (TTP223B). Under normal conditions, module output low level, mode is low power mode; Once you touch the corresponding position along with your finger, the module outputs high level, the mode switch for fast mode; When last 12 seconds without touching, mode switching to low power mode. You possibly can install the module in the non-metallic materials comparable to plastics, glass surface. In addition, the thin pieces of paper (non-metallic) covering on the surface of the module, so long as the right location of the touch, may be made into a hidden buttons on the wall, desktop and other places. The module means that you can dispense trouble of the same old press type buttons.