Description:Attention :This is a DC-DC voltage converter module,Must be noted when using:1 Input voltage can not be greater than the maximum input range2 Output power can not be greater than the maximum load for a long time3 Input power must be greater than the output power, because the power consumption of the module itself Q & A:Q : for Why output voltage is less than the nominal voltageA : Input power supply power is too low.Test the input voltage with a multimeter,at this for time of the input voltage is very low Applications:AA AAA Dry cell powered equipmentBreadboard Power SupplySmall power motorsCamera, Video cameraElectric toysModel aircraftLED Lightingelectronic diy kitSTM32 FPGA/CPLD PIC AVR Boardelectronic diy kitWifi Module,ESP8266Bluetooth-compatible Module,HC-05,HC-06,SPP-C Specifications:Type: 3.3V with Pin/3.3V no Pin/5V with Pin/5V no PinUltra-light weight3.3V : Input voltage for DC 0.8 ~ 3.3V,output for DC 3.3V2%for DC Boost Converter Module working frequency 350KHZHigh efficiency : 95% (usually is 75%-93%)Low Quiescent Current : 13uALow ripple and Low noiseUltra-small size (Not including pin): 1cmx1cm/0.39x0.39"5V :Input voltage for DC 1 ~ 5V,output for DC 5V2%for DC for DC Boost Converter Module working frequency 350KHZHigh efficiency : 95% (usually is 76%-93%)Low Quiescent Current : 13uAUltra-small size (Not including pin): 1cmx1cm/0.39x0.39"Quantity: 1 Pc Note:Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bidDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank youPackage Contents:1 Pc x Boost Converter