LCUS-1 type USB Relay Module Electronic Converter PCB USB Intelligent Control Switch

(8 customer reviews)


99658 in stock


LCUS-1 USB relay module equipped with stable performance USB to serial chip and microcontrollers, the computer can be used in the serial port debugging software to send serial port command to control the relay on and off.

Product Parameters:

  • Controller chip: Onboard high-performance microcontroller chip
  • Control chip: Onboard CH340 USB control chip
  • LED indicator: Onboard power LED and relay status LED
  • Relays: Onboard 5V, 10A / 250VAC, 10A / 30VDC relays, long relay life, can be continuous pull 10 million
  • Protection function: with overcurrent protection and relay diode freewheeling protection.
LC USB switch protocol:
Data (1) — starting identity (the default is 0xA0)
Data (2) — switch address code (default is 0x01, identifying the first channel switch)
Data (3) — Operating Data (0x00 to “Off”, 0x01 “On”)
Data (4) — checksum
Open USB switch: A0 01 01 A2
Close USB switch: A0 01 00 A1


Step1: the USB relay module into the computer, install CH340 USB to serial chip driver

Step 2: Open the STC-ISP, SSCOM32 serial debugging software, select the baud rate of 9600, in hexadecimal (hex) form to send A0 01 01 A2 to open the relay; hex (hex) form Send A0 01 00 A1 to turn off the relay, you can choose to send manually or automatically. The following: SSCOM332 serial debugging software for example:

Send manually

Select the baud rate 9600, check the “HEX send”, enter the command A0 01 01 A2 or A0 01 00 A1, point “send”, you can turn on or off the relay

Send manually

Select the baud rate 9600, click on the SSCOM32 interface in the “expansion”, enter the command a0 01 01 A2 and A0 01 00 A1, check the “HEX send”, enter the automatic cycle to send the interval, check the “automatic loop” The relay can be automatically turned on and off
Contact Load

Low Power

Brand Name


Model Number

USB Relay Module





Protect Feature


Power Source



General Purpose


USB Relay Module

8 reviews for LCUS-1 type USB Relay Module Electronic Converter PCB USB Intelligent Control Switch

  1. L***N

    Switch only with PC

  2. R***k

    Thank you.

  3. A***v

    Реле работает с помощью специальных команд и софта, заставить реле работать по другим командам пока не удалось.

  4. V***v

    Very nice, Bro!

  5. R***n

    It should be link to download some SW to use it to make it easy, but I after a while found (terminal.exe) and it works well.

  6. Customer

    Excelente producto, seguiré comprando

  7. G***n

    все работает пришло без задержек, были некоторые сложности с установкой, в комплекте нет драйверов и программы, но есть в описании названия, по ним в Интернете все нашел

  8. V***v

    Пока получается управлять вот через это ПО.

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