4 Zone Sounder Circuit Extender Kit
Provides four extra conventional sounder circuits with open and short circuit fault monitoring. Compatible with most manufacturers' fire alarm control panels. Supplied on a double gang plate. Basic connection requires four wires: 24 VDC, 0V, Sounder –Ve is not required as our conventional panels have a common 0V rail). Fits on standard UK 25mm flush or surface mount back boxes.
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