2X Lm317 Lm337 Positive And Negative Dual Power Adjustable Power Supply Board Diy Kit 6131736506536

2X Lm317 Lm337 Positive And Negative Dual Power Adjustable Power Supply Board Diy Kit 6131736506536

Maximum Power Per Channel:10W color: blue Material: plastic + metal Package Contents: 2 * LM317 dual power amplifier board set

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