Item Type: Buck Module_x000D_Input: 6V-40VDC(DC5.5/2.1 jack, terminal block)_x000D_Output: 5V/3A(Maximum)(with identification resistance)_x000D_Efficiency: 92%(Maximum)_x000D_Switching Frequency: 150KHz_x000D_Working Temperature: -40~+85_x000D_Size: Approx. 50 x 35 x 12mm / 2 x 1.4 x 0.5in(length x width x height)_x000D_Load Capacity: Maximum output 3A (two mobile phones at the same time)_x000D_Application: USB 5V power supply equipment such as mobile power, mobile phone, tablet, etc. 1Dual USB output 3A buck module can add charging ports for various electronic devices 2With a maximum output of 3A load capacity, it can be used for two mobile phones at the same time 3Suitable for USB 5V power supply devices such as mobile power supplies, mobile phones, and tablets. 4High quality material can make sure the durability and stability of the product 5Professional design and reasonable structure, easy to install and remove, good replacement for old one1 x Module