The PAD100-ZM module uses one (1) address on an SLC Loop when monitoring two (2) Class B or one (1) Class A circuit. The module requires and supervises a 24VDC auxiliary power connection. The 24VDC power source must be either a Potter IPA series addressable panel, or a Potter PSN series power supply. The IDC may be wired Class B or Class A which is selectable by an on board DIP switch. The PAD100-ZM employs one red LED to indicate the module's status. In normal condition, the LED flashes when the device is being polled by the control panel. When a device is activated, the LED will flash at a fast rate.