SMAKN Micro USB 5V 4-Channel Relay Module USB Control Relay Module

1.The module have MICRO USB and serial port , so they can communicate with PC and other device conveniently. 2.The normal working voltage for modules is 5V.And module of ICSE014A have a power interface of 5V. Parameters are as follows: Interface Modules all have Micro USB and serial port . Read following for details 1.Micro USB: Standard micro USB mother mouth. 2.TX : Transmit 3.RX : Receive 4.5V : Volt current condenser 5.GND : Ground 6.Power Interface : Only ICSE014A have . Interface is used when Micro USB cannot give enough power.