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ICStation MICRO USB 5V 4-Channel Relay Module USB Control Relay Module ICSE012A

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Note: When the board is powered on, all the relays will be activated.


1. It's designed with MICRO USB and serial port for communicating with outside. It's more convenient to connect module with PC and other device.
2. The normal working voltage of this module is 5V.













channel count of module






working current






input voltage



whether have serial port






baud rate of serial port






module control frequency





whether have power interface


Modules are with Micro USB, serial port and TTL serial interface.

  • Micro USB:Standard micro USB female adapter.( can use the USB extension cord to connect with the PC and the other devices)
  • TX: Transmit
  • RX : Receive
  • 5V:Volt current condenser
  • GND : Ground


How to use it?

1).USB Usage method

    These modules use the USB port to connect with the PC as following:

Open the "Relay Board Manager" to control the module directly. Please refer the usage of this software to "Relay Board Manager_Reference".

2)Serial port using method

These modules can use the serial port to connect with other communication devices. These modules can receive the Single-byte instruction from the upper monitor.
Upper Monitor          0x50        0x51
ICSE012A          0xAB
ICSE013A          0xAD
ICSE014A          0xAC

Suggested by our customer:

Here is the way it works, take ICSE012A as an example:

·   After the ICSE012A has been connected to PC, if send 0x50 to ICSE012A, it will reply 0xAB.( Relay Board Manager: Tool--Configure)
·   Then if you send 0x51 to ICSE012A, it is ready to receive hex code.( Relay Board Manager: Open the Sele)
Actually you can use a software “Bus Hound” to see what the transmission hex codes are and use Python PySerial library to customize the relay actions as well as “Relay Board Manager”.
Python Sample:
import serial
import time
def relay_1():
if __name__ == "__main__":

These modules will work normally after they receive the "0X51" instruction. The bytes which these modules receive can control the modules directly and every singly byte control one channel of the module( "0" means start, "1"means stop).

The details are as following:







Control the relay K1


Control the relay K2


Control the relay K3


Control the relay K4


Control the relay K5


Control the relay K6


Control the relay K7


Control the relay K8



Rating: [4] 4 of 5 Stars! Date Added: 2018-04-07 08:32:00

As I need quite a few loops to achive the right commands for the relay controller in National Instruments LabVIEW, this might be interesting for someone. You can download a example-vi here: https://pidelta.de/usb-relay-labview/

Rating: [4] 4 of 5 Stars! Date Added: 2016-05-07 21:54:01
Regarding the ICStation MICRO USB Control 5V 4-Channel Relay Module, otherwise known as ICSE012A 5V relay module. The test python code shown on the website does not work using Python 2.7. I found that all of the fd.write() statements were missing the '' character before the 'x' character. For example, fd.write('x50') needed to be fd.write('x50'). Add a '' slash character before all of the 'x' characters and you may have better luck getting it to work. So to turn on/off relay 0, issue fd_write('x00'), then fd_write('x01').

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ICStation MICRO USB 5V 4-Channel Relay Module USB Control Relay Module ICSE012A