Cobalt Rex relay extension board - DCC concepts

4 on stock
The Cobalt Relay extension board is a versatile relay switching interface that allows you to do almost any form of interlocking automated switching or automation.
Use via manual switches or control it with detectors etc.. Rex can be used for DC and DCC layouts.
Rex has 4 relays on board which can be used all four together or in pairs.
Power input: 12 to 18 volts DC or DCC.

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