The System Sensor B524IEFT-1 isolator base is designed for use with all System Sensor 200 analogue addressable detectors. The B524IEFT isolator base prevents an entire communications loop from being disabled when a short circuit occurs. It achieves this by isolating the part of the loop containing the short from the remainder of the circuit. The base will automatically restore the entire loop when the cause of the short circuit is corrected. Up to 20 devices may be isolated per isolator base, depending on the device type.

• Low profile (26mm) • Low Current consumption (100 μA) • Up to 99 isolators per loop • Complete isolation of short circuits • Automatic restore when short circuit is corrected • Rugged industrial construction • Remote LED Connection • Sensor continues to operate in case of a short circuit on either side of isolator base

Operating Voltage Range 15 to 28.5VDC Standby Current 100μA maximum @ 24VDC Maximum ON Resistance (24V)0.2Ω Maximum ON Resistance (15V)0.29Ω Environmental Specifications Application Temperature Range-30OC to +70OC Operating Humidity 0 to 95% Relative Humidity (non-condensing)