The Hold-Up Devices can be installed in fast food restaurants, banks, mini-marts, health care facilities, jewelry stores or any installation that calls for an absolutely silent emergency alarm. The unique design features a glowing green LED to indicate an armed state. To insure against accidental tripping, both finger pads must be touched simultaneously. When this occurs, the LED glows red and the zone will go into an alarm condition. To reset the armed condition, simply touch the left finger pad. An accidental bump or touch will not trigger the Hold-Up Devices. CT technology allows even an operator wearing gloves to activate sensor. Perfect Hold-Up Device for fast food restaurants.