The PAD100-OROI uses one (1) SLC loop address when monitoring one (1) Class B circuit and providing one (1) Form C relay contact. The module mounts on either a 4" square or double gang box. The module is capable of monitoring one (1) Class B circuit. The PAD100- OROI includes 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 the input is activated, the LED will flash at a fast rate.