See All Categories

Learn More

Current Page
  1. Home
  2. Network

[] Windows 7/8/10 Support USB Relay 2 Module

(International shipping available) New
Visit Store
Basic Information
Product Windows 7/8/10 Support USB Relay 2 Module
SKU P4392-Q312
Price Contact us
Domestic / International Shipping oversea delivery
Delivery fee International Shipping Fee
Shipping Method Parcel Service
Product promotion via SNS
Product promotion via SNS

To use or earn Naver Mileages, please check out through personal payment window.

Product Option


Select item with details above

(Minimum Order : 1 or more / Maximum Order 0 or less)

Size Charts

Select quantity.

To add product, select an option in the above option box.

Product List
Name Quantity Price
Windows 7/8/10 Support USB Relay 2 Module up down Contact us (  )
Total(Quantity) : 0 (0 item)

Discounted amount of your subtotal will appear when you place your orders.

Buy NowBackorder Add to Cart SOLD OUT Add to Wish List



The Relay of this module is controlled by USB. The basically communication parameters are 9600 bps, N, 8, 1. 2 LEDS are internaly designed to check the Relay operating status.



  • Operating Voltage : USB Voltage
  • Supply current :  > 500mA 
  • Input Channel : 1 Channel
  • Relay Capacity: AC250V/10A, DC30V/10A
  • Output State LED : 2EA 
  • Communication Mode : USB
  • Communication Speed : 9600bps, 8, 1, N


Baud Rate : 9600bps

Data Bit : 8 bit

Parameter : No

☞ The end of command is CR(0x0D)

< Relay Control>

2 Channel Relay Control

RY 11

RY : Command

1 : 1 Number channel Relay

0 : Relay Control ON(1), OFF(0)

CR : 0x0D

<Example of Relay Control>

RY 11 -- Relay #1 ON

RY 10 -- Relay #1 OFF

RY 21 -- Relay # 2 ON

RY 20 -- Relay # 2 OFF

RY A1 -- All Relay ON

RY A0 -- All Relay OFF

<Response Code : No>

<Read the Relay Operating State>

RY Currently ON/OFF State Read

> Command : RY

<Response Code :  10 ( 1 number ON, 2 number OFF condition)

<Input Signal Read State>

Read the Input State

> Command : IN

<Response Code : 0(OFF), 1(ON) condition

Photo Gallery

< Case Housing>



Case Dimensional Drawings










<Cable - 1.0m>




We accept the following forms of payment:
- Credit Card
  - Visa
  - MasterCard
  - American Express
  - Discover
- PayPal


  • Shipping Method : Parcel Service
  • Shipping Area : A Region.
  • Shipping Cost : International Shipping Fee
  • Shipping Time : 3 - 7 days
  • Please take into consideration that some products may take additional time for delivery and processing.
    Important: Your order is shipped once your payment has been cleared. Please contact our customer service center if you would like to request an exchange or return on your order.

    - Customs and Duties

    The recipient will be held responsible for international shipments which may be subject to import duties and taxes. Please be advised that these charges are levied by the destination country and we do not have control over them. In the case that the recipient refuses to receive the parcel, the order will be returned to Korea and will not be re-shipped. Relevant expenses (round-trip shipping, customs, etc.) will be deducted from the refund.

Returns & Exchanges

1. Requirements:

Please take into consideration that we only accept qualifying returns but not exchanges. Refunds are issued once the returned products clear our inspection.

1) An item is eligible for cancellation if:
-you posted a Return request within 24 hours of payment and your order is still under “Pending” status (if your order is under “Preparing Shipment” status, please contact our customer service center) or
-the order is delayed for more than 10 days since payment and you have not received any notification regarding the delay; or
-the ordered item is out of stock.

2) We accept return(s) if:

-you receive a product different from your order; or

-you receive a defective product.

**Return Instructions

(1) Post a return request on our Return forum within three days of receipt. You are required to attach the photos of the received product(s) and include the item code, the order number, and the reason for the return.

(2) A customer service representative will be in contact to assist you by email or phone.

(3) Items returned must be in their original condition, which includes tags and any packaging. Also, you need to include a note of your order number, name, and user ID.

*Please be advised that returns are accepted ONLY IF you followed the instructions above and your return request has been approved by our staff. Returns that are shipped to us without any prior consent are not accepted.

*Please note that EVEN the defective/incorrect item(s) must be returned with all of the tags and labels intact. The item(s) must be sent in their original packaging and unworn.

*Please include all contents of the original package and free gifts (if applicable) in your return packaging.

* Shipping fee for any return caused by our fault will be paid by the company. However, if EMS’ cash on delivery is not possible then you can scan the return receipt and either mail it with the item to return or post an image of it on the forum. The shipping fee will be refunded once the returned item has arrived.

3) We do not accept return(s) if:

-you are returning the items just because you changed your mind (on size, color, etc.)
-you are returning shoes, bags, or any other accessories
-the products are damaged due to your mishandling
-your return request is not approved by our staff

The following items are not considered defective:

* Items that are originally manufactured without tags or labels
* Items with creases that may have been made while shipping
* Items with unsatisfactory/incomplete finish due to mass production

4) If there is a missing item from your order:

*Contact our customer service center by phone or by forum (if you cannot reach us by phone) within 1 day of delivery.
*Please keep all contents of the original package including packaging material (boxes, plastic bags etc.) with you until you are instructed otherwise.

Please note that we may not be able to process the refund for your missing item if you lose or damage any packaging material.

Product Inquiry


Post your review here.

There are no posts to show

write a review See All


Product related questions and answers

There are no posts to show

product questions See All

Cart 0 item(s)