Description: 

• Size: 8.6mm x 12.3mm 

• Input voltage: DC 4.2 V-10 V 

• Output: 3.3 V, 800 mA 

Note: 

• Boost modules or buck module indicate the operating voltage, Please donot exceed operating voltage , or it will be damaged easily 

• Boost module output voltage can only be greater than or equal to input voltage, cannot be less than the input voltage

• Buck module input voltage must be higher than output voltage of 1.5V or 2V, otherwise it can not output enough power

• Automatic Adjustable Boost or Buck module has start voltage and limit working voltage, Please donot exceed them , or it will be damaged easily 

• Cannot reverse polarity , or it will be short circuit, or will be born easily