When switched off, the module goes into power/audio bypass mode whereby the un-processed audio is routed straight through to the extension speaker. The module requires a 12 to18V DC supply voltage, and comes supplied with a fused DC power lead, a 3.5mm audio plug-to-plug lead, 1.2 m long, and an IP65 waterproof panel-mounting switch with LED. Optional audio leads, extension speakers and adapters are available to suit most radios and applications.
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