The Pepperl + Fuchs KFDO-CS-EX1.54 is a single channel isolated barrier ideal for use with intrinsically safe fire alarm system detectors and call points.

• This isolated barrier is used for intrinsic safety applications. It provides control and signal transfer for SMART compatible fire and smoke alarm transmitters inside hazardous areas.
• Digital signals may be superimposed (AC up to 6 V) on the analog values in the hazardous or safe area and are transferred bidirectionally.
• The fall time of the digital signal must be smaller than 50 µs, the current in the hazardous area must be bigger than 1 mA.
• Since this isolator is loop-powered, use the technical data to verify that proper voltage is available to the field devices.