With regular switch or dimmer, you would tap switch UP to turn light on. To turn light OFF, you would tap switch down. That is a normal switch operation we are used to. So, what is multi-tap operation? It is exactly what it sounds like. Smart switches we use allow for multi-tap operations. You can Double-Tap UP and the previously assigned action will execute. If you Double-Tap DOWN a different action would take effect. Customer can use up to 5 Taps up or down. Imagination and creativity is your limit. This feature is available in some systems and is defendant on manufacturer.