Features:100% brand new and high quality.This is a DC-DC boost converter module with working frequency of 1.0 MHz.The module has high efficiency, usually can be 79-90%.Small size and light weight, it is convenient to use.Widelyused for 6-15V low power motors, 6-15V LED lighting, hard drive power supply, 9V 12V 15V Routers and network equipment, wireless communication equipment, 315M 433M wireless remote controller.Specification:Input voltage 3~6V, output 6-15.5VMaximum input current: 1.4ALong-term work Current: 1AConversion efficiency: 79-90%Input: USB Male Interface, DC 3-6VOutput : 2 PIN XH2.54, DC 6-15.5VIf input dc 5v,output 6-15.5V Adjustable Power : Maximum 7WDC-DC Boost module working frequency 1.0MHZ. Operating ambient temperature : -40~+85 Degrees Celsius .Size: 47.5*16mm / 1.9*0.6inWeight: 7g / 0.2oz (approx.)Package list:1 * ModuleNote:This is a DC - DC voltage converter module, please pay attention when using:1, The input voltage should not be higher than maximum input range;2, The output power cannot be higher than the maximum load for a long time.3, The input power must be higher than output power, because of the power consumption of the module itself.FAQ:Q: Why the output voltage is lower than the nominal voltage?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.Modify Parameter Description: 1.4A current limiting resistor,Remove the resistance, the maximum input current can reach 2A.But IC have "Over Temperature Protection" Function.It will turn off the power MOSFET automatically when the internal junction temperature is over 150 Degrees Celsius. The power MOSFET wake up when the junction temperature drops 30 Degrees Celsius under the OTP threshold temperatureThe master chip is FP6291.