XH-M422 TPA3116D2 Bluetooth Amplifier Board U disk TF Player Amp Boards Dual Channels 2*50W DC12V-24V 3V-9VDC 600RPM N20 Miniature Gear Motor with Metal Gear measure electrical conductivity changes and
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USA
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- USA
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Ships within 48 hours · Estimated delivery Sep 19 - Sep 24