Attached to the manual fire alarm box is a factory installed D8127 POPIT (Point Of Protection Input Transponder). The POPIT module is addressed using on board slide switches and then connected to a D8124 data expansion loop. The POPIT is polled every 150-300 milliseconds and reports any open, shorts, or ground faults on the manual fire alarm box wiring.

The D462 is generally installed at building exits such as stairways or lobbies. Persons evacuating the building during an emergency are able to initiate an alarm by pulling down a lever. The latching pull-down lever on the D462 requires a key to reset. This allows the origin of the alarm to be determined easily.

The D462 is a high quality, die cast device constructed entirely of non-toxic materials. It has a low profile and rounded edges to fit most design requirements. All components are pre-painted or have plated surfaces to inhibit corrosion.

Inside the box are one (1) glass rod, two (2) keys, two (2) mounting screws, and a Operation and Installation Instructions.