The GRI 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 and armed state. To insure against accidental tripping, both finder pads must be touched simultaneously. When this occurs, the LED glows red and the zone will go into the alarm condition. To reset to the armed condition of the latching option, simply touch the left finder pad. An accidental bump or touch will not trigger the GRI Hold-Up Devices. CT technology allows even an operator wearing gloves to activate sensor. Perfect Hold-Up Devices for fast food restaurants.