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5pcs ACS712 Module 20A Current Detection Board ACS712 Hall Current Sensor Module

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3pcs ACS712 Module 20A Current Detection Board ACS712 Hall Current Sensor Module

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5pcs TTL to RS485 Module Hardware Automatic Flow Control Module Serial UART Level Mutual Converter Power Supply Module 3.3V 5V

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3pcs TTL to RS485 Module Hardware Automatic Flow Control Module Serial UART Level Mutual Converter Power Supply Module 3.3V 5V

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5pcs 6x6mm Key Module Touch Push Button Switch Module Electronic Component