20Pcs 5V To 3.3V DC-DC AMS1117 800MA Step Down Power Supply Buck Module

20Pcs 5V To 3 3V DC DC AMS1117 800MA Step Down Power Supply Buck ModuleFeatures Size 8 6 x 12 33 mmInput voltage DC 4 2 V 10 VOutput 3 3 V 800 mANote 1 Boost modules or buck module indicate the operating voltage Please do not exceed operating voltage or it will be damaged easily 2 Boost module output voltage can only be greater than or equal to input voltage cannot be less than the input voltage 3 Buck module input voltage must be higher than output voltage of 1 5V or 2V otherwise it can not output enough power 4 Automatic Adjustable Boost or Buck module has start voltage and limit working voltage Please do not exceed them or it will be damaged easily 5 Cannot reverse polarity or it will be short circuit or will be born easily Package included 20 x Step down module