LiftMaster IPAC IPAC Server Administrator's Manual - Page 156
What is a Card?, light to indicate failure.
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IPAC Server Administrator's Manual Page 155 of 334 What is a Card? A card is a physical credential carried by a user, such as a proximity card, magnetic stripe card, or smart card. It has a number printed on its surface, such as "789" or "00789." A user presents his or her card to a card reader - or "swipes" it - to enter a door. The card reader reads the card and sends the data to a control panel, which processes the request. An example is that the card reader flashes green when a valid card is presented, and the door unlocks. If the card is rejected, the card reader flashes red and the door remains locked. NOTE: For card readers without indicator lights, a valid card will still cause the door to unlock; there is just no green light to indicate success or red light to indicate failure. 155