U471 mic input / spk output / relay control output – ARM Electronics IP540_620MDVANVP User Manual

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U471 mic input / spk output / relay control output | ARM Electronics IP540_620MDVANVP User Manual | Page 50 / 67 U471 mic input / spk output / relay control output | ARM Electronics IP540_620MDVANVP User Manual | Page 50 / 67
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