Description: FEATURES: Adopt switching power supply structure design, switching power supply main control chip frequency is 300KHz, also has over current and over temperature protection functions, chip efficiency is as high as 92%.PORTABLE: Very small size and light weight.FUNCTION: The electronic device is protected by the shielding cover, which greatly reduces electromagnetic interference and ensures the normal operation of the receiverPROTECTION: It has the protection function to prevent the polarity of the power supply from being reversed. If the power supply is reversed accidentally, it will not cause damage to the .NAME: External BEC 3A. Specification: Working voltage: lipo 2s 4sContinuous current: 3AInstantaneous current: MIN 4A for 20 secondsOutput voltage: 5.25V 0.5Vsize:4.1cmx1.2cmx0.4cm/1.61inchx0.0.167inchx4inch Size Chart: 4.1cmx1.2cmx0.4cm/1.61inchx0.0.167inchx4inch Package Includes: 1 BEC3A Note: Please allow slightly errors due to manual measurement and different monitors.