FederalSignal
Connector kit, Part# 300CK
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Connector kit, Part# 300CK for use with SelecTone signals.
The Model 300CK connector kit is a circuit board which is
installed in the tone module receptacle of a SelecTone
speaker/amplifier (in place of a tone module), making it possible
to transfer audio signals from the command unit to the individual
speaker/amplifier.