2023 Spring Super Sale


Mouse over to zoom in

12V 8CH RS485 Relay Modbus RTU Protocol Serial Port Remote Control Switch for PLC Control Board

12V 8CH RS485 Relay Modbus RTU Protocol Serial Port Remote Control Switch for PLC Control Board

Price on the app only:

Already have TOMTOP APP

Scan the product's code to buy directly!

Note: Please update TOMTOP App to the latest version.


Download freely and enjoy extra offers!

Ship From:
  • China Warehouse
Please select a warehouse
Usually will be shipped in business days hours
The request failed! Please try again.
Sorry, it seems that there are no available shipping methods for your location.Please contact us for further assistance.


Ship to

United States
Stock in: china

For each user order no more 5 item(s)

Special discount has ended

Please note each user for only 1 item(s)

Preorder Add To Cart Out of Stock

Arrival Notice

if the goods arrival in 90 days,we will inform you by email!


Arrival Notice

Notification Subscription Success!

if the goods arrival in 90 days,we will inform you by email!

Notification Subscription Failed!

Error appeared,Please try again later!

Arrival Notice

Buyer Protection

  • Full Refund If you don't receive your order
  • Full or Partial Refund , If the item is not as described Learn More >
We have here a very impressive product with countless of features that you will surely need! You don't need to be very professional, it;s very easy for you to understand the usage. What more could you ask for? Do not hesitate to ask us for our recommendation to ensure the best possible feature and function that will work out for you!

8 channels relay. 
Support modbus pol input.
Under the mobus command mode, it can support up to 64 devices in parallel.
Under the "delay" command, the maximum delay is 255 seconds.
Mobus commands can be made serial hyperterminal (serial assistant)  or "modbus poll" enter.
 "Open" "close"  "momentary" "self-locking" "interlock" "delay" 6 commands.

Supply voltage: DC 12V 
Maximum load: 10A / 250V AC, 10A / 125V AC, 10A / 30V DC, 10A / 28V DC, 10A / 12V DC
Item size: 90 * 62 * 19.5mm / 3.45 * 2.44 * 0.77in
Package size: 90 * 62 * 19.5mm / 3.45 * 2.44 * 0.77in
Item weight: 115g / 4.06oz
Package weight: 118g / 4.16oz

Package lists:
1 * 8CH relay board


Post a new topic

Please note that TOMTOP Forums are a community for all communicating and getting help each other. There will be some enthusiastic friends participate in your discussions. Of course TOMTOP customer service (with tomtop customer service icon) response is guaranteed ,which is the same way you contact us at http://www.tomtop.com/contacts

open this forum in full page
Customer Reviews

There are no customer reviews yet.

  • 5 stars
  • 4 stars
  • 3 stars
  • 2 stars
  • 1 stars

Share your thoughts with other customers and get Tomtop Points, the first 5 reviews get DOUBLE Tomtop Points!

Write a Customer Review
Be the first to review this item

Top Sellers More>

Please activate your account first. We will resend the activation email to help you complete your registration.

Recently Viewed


TOMTOP use cookies to give you the best shopping experience. If you continue to use our services or create a new account, we will assume that you agree to our  Privacy Policy.

Tell us which product you want to Social Saving

Click the refresh verification code