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DC to DC 6 18V to 5V USB Output Step Down Power Charger with Adjustable Buck Converter Red tf 68 Record the pH value printed Weight:20Kg Record the pH value printed for detecting the humidity can change the threshold ( i This mini DC DC step down voltage converter module supports 6 18V voltage input and 5V 3A output with input polarity reverse protection and output overvoltage protection On board female type A USB port with identification circuit perfectly fit for iphone iPad and Android smartphones as well as it can be useful to power or recharge any electronic gadget which required 5V input power up to 3A
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