Secure Hold up button

HD-2 Hold-Up Device 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. It's unique design features a glowing green LED to indicate an armed state. To insure against accidental tripping, both finger pads are required to be touched simultaneous.

The HD2 is non-lactching.
HD1 Latching, was discontinued.