2X Lm317 Lm337 Positive And Negative Dual Power Adjustable Power Supply Board Diy Kit 6032980272775

2X Lm317 Lm337 Positive And Negative Dual Power Adjustable Power Supply Board Diy Kit 6032980272775

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

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