Are there any instructions on how to use it? Send or receive Messages?

This is a "well behaved" product which seems to meet its specifications. I recommend this product for what it does. It works well for both send and receive. I have several of them. Serial communications can be a bit "tricky" so if you are not familiar with it, I recommend either a book or research on the internet. A full discussion of this subject is a bit beyond this forum. Good luck.

Would it work with rs422?

Currently, only RS485 is supported.

this item include the cables on the picture?

I don't know what picture you are looking at but - probably. The package included a 4 conductor cable approximately 12 inches long. It is designed to plug into the "TTL" end.

Does the tx go into high-z (tri-state) when not transmitting, so it can be used on modbus or multi-drop lines?

Yes. It works well with Modbus multi-drop lines as long as your "master" is working according to spec. For the price, just try it to be sure it works for you.

Dsd Tech Sh U12 Rs485 To Ttl 5v Board Max13487

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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€ 20.44

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔌 Power your projects with pro-grade RS485 connectivity—because your network deserves the best!

SCALE LIKE A PRO - Connect up to 128 slave devices effortlessly—perfect for complex IoT and robotics setups demanding robust multi-machine communication.
UNMATCHED PROTECTION - Built-in 15KV ESD and TVS overvoltage safeguards shield your hardware from unexpected electrical surges.
LIGHTNING FAST DATA FLOW - Experience blazing 500Kbps transmission speeds that keep your multi-device networks running seamlessly.
ALWAYS ON SUPPORT WARRANTY - DSD TECH’s 1-year replacement and rapid 24-hour response guarantee keep your projects moving without downtime.
ROCK SOLID STABILITY WITH MAX 13487 - Industry-leading chip ensures ultra-reliable RS485 to TTL conversion for your Raspberry Pi and Arduino projects.

The DSD TECH SH-U12 RS485 to TTL 5V Board, powered by the MAX13487 chip, delivers high-speed 500Kbps data transmission with robust 15KV ESD and TVS protection. Compatible with Raspberry Pi, Arduino, and other MCUs, it supports multi-machine communication for up to 128 devices. Backed by a 1-year warranty and responsive technical support, this compact board is engineered for reliable, scalable, and secure serial communication in professional and hobbyist applications.

Specifications

ASIN	B07B667STP
Best Sellers Rank	#1,155 in Single Board Computers (Computers & Accessories)
Customer Reviews	4.3 4.3 out of 5 stars (198)
Date First Available	March 2, 2018
Is Discontinued By Manufacturer	No
Item Weight	0.528 ounces
Item model number	SH-U12
Manufacturer	DSD TECH
Product Dimensions	2 x 0.7 x 0.7 inches

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 20.44

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

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DSD TECH SH-U12 RS485 to TTL 5V Board with MAX13487 Chip for Raspberry Pi Arduino and Other MCU

Description

Specifications

Common Questions