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16x2 LCD (Blue) 2 Ch 5V relay Board making it essential for applications making it essential for applications demanding cost effective precision movement Verify polarity carefully before making connections Pin 1 (VSS) Ground Pin 2 (VDD) +5V Power Supply Pin 3 (V0) Contrast Adjustment (connect to potentiometer) Pin 4 (RS) Register Select 0 for command and more Origin Original Authentic Module Warranty 7 day warranty on manufacturing defects Support Email & WhatsApp 24 7 Pin Configuration
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