This addressable device communicates over a single pair of wires with the DGM-ISO-8L panel. Power to operate the ISO-6Z is derived from the DGM-ISO-8L panel over the same communication pair. The 6-zone EOL diode device is provided in an enclosure with a tamper switch. Tamper is reported as a seventh zone. The ISO-6Z module must be connected to the device being monitored within the same room. Typical distance to the device being monitored is six feet from the ISO-6Z panel. The ISO-6Z provides jumper selection for N.O. or N.C. inputs per zone. All zones are latching.