Features: _x000D_ 100% brand new and high quality. _x000D_ This is a DC-DC boost converter module with working frequency of 350 kHz._x000D_ _x000D_ The module has high efficiency up to 95%, usually can be 75%~93%. _x000D_ Ultra small size and light weight, it is convenient to use. _x000D_ _x000D_ Widely used for AA, AAA battery-powered devices, breadboard, small power motor, cameras, electric toys, model aircraft, LED lighting, electronic DIY kits, etc. _x000D_ _x000D_ _x000D_ Specification:_x000D_ _x000D_ Type: 3.3V, no pins; 3.3V, with pins; 5V, with pins (Optional) _x000D_ _x000D_ _x000D_ 3.3V: _x000D_ Input voltage: DC 0.8 ~ 3.3V _x000D_ Output voltage: DC 3.3V2% _x000D_ High efficiency : 95% (usually is 75%-93%)_x000D_ Low quiescent current : 13uA_x000D_ Low ripple and Low noise_x000D_ Size (Not including pin): 10.6*10.5*5.6mm / 0.42*0.41*0.22in_x000D_ Weight: 2g / 0.1oz (approx.)_x000D_ _x000D_ 5V:_x000D_ Input voltage: DC 1 ~ 5V _x000D_ Output voltage: DC 5V2%_x000D_ High efficiency : 95% (usually is 76%-93%)_x000D_ Low quiescent current: 13uA_x000D_ Size(Not including pin): 10.6*10.5*5.6mm / 0.42*0.41*0.22in _x000D_ Weight: 2g / 0.1oz (approx.) _x000D_ _x000D_ _x000D_ Package list:_x000D_ 1 * Module _x000D_ _x000D_ _x000D_ Note:_x000D_ This is a DC - DC voltage converter module, please pay attention when using:_x000D_ 1, The input voltage should not be higher than maximum input range;_x000D_ 2, The output power cannot be higher than the maximum load for a long time._x000D_ 3, The input power must be higher than output power, because of the power consumption of the module itself._x000D_ FAQ:_x000D_ Q: Why the output voltage is lower than the nominal voltage?_x000D_ A :Because the input power is too low.Use a multimeter to test the input voltage, the input voltage is very low at this time.