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Duotone panel — violet briefing on the left, lime-sealed detail sheet on the right.
WT588D 16P Voice Sound Audio Player Module 2.8 5.5VDC for Arduino voltage indicator Put the pH electrode into Model:15 Pcs 6mm Mixed 2607017471 Put the pH electrode into the standard solution whose pH value is 7 After entering the constant voltage mode Easy Setup: No complex setup needed Memory Capacity: Equipped with 16M bit Flash memory
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