Isolator bases prevent an entire communications loop from being disabled when a short circuit occurs. They accomplish this by isolating that part of the loop containing the short from the remainder of the circuit. These bases also automatically restore the entire loop when the cause of the short circuit is corrected. In general, up to 25 addressable devices may be isolated between isolator bases.

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Base Diameter: 6.1 inches (155 mm) Base Height: 1.2 inches (31 mm) Mounting: 4-inch square box with or without plaster ring, Min. depth - 1.5 inches (38 mm) 4-inch octagon box, Min. depth - 1.5 inches (38 mm) 31⁄2-inch octagon box, Min. depth - 1.5 inches (38mm) Operating Temperature Range: –10°C to +60°C (14°F to 140°F) NOTE: Do not install in locations where normal ambient temperature extends beyond 0° to 49°C (32° to 120°F) Operating Humidity Range: 10% to 93% Relative Humidity (Non-condensing) Electrical Ratings Operating Voltage: 15 to 32 VDC Current Standard: 450μA Maximum Alarm: 5mA Maximum