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.Customs & duties included in the price

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C$1830

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Description

🔌 Connect smarter, scale faster, and protect like a pro!

BUILT TO LAST - Robust 15KV ESD and TVS overvoltage protection keeps your setup safe and sound
ROCK SOLID STABILITY - Powered by MAX13487 chip for unmatched reliability in your IoT projects
SCALE WITHOUT LIMITS - Connect up to 128 slave devices for complex multi-machine networks
INSTANT STATUS INSIGHT - Integrated LED indicators for TXD, RXD, and power keep you in control
LIGHTNING FAST DATA FLOW - Experience blazing 500Kbps transmission speeds for seamless communication

The DSD TECHSH-U12 RS485 to TTL 5V Board features the high-performance MAX13487 chip, delivering stable and fast data transmission up to 500Kbps. Designed for Raspberry Pi, Arduino, and other MCUs, it supports multi-machine communication with up to 128 slave devices. Enhanced with 15KV ESD and TVS overvoltage protection and LED status indicators, this compact 5.08 x 1.78 cm board ensures reliable, scalable, and safe connectivity for your advanced electronics projects.

Reviews

S**R

satisfying..

Good quality as expected.

21.11.2020

C**S

these are the nuts

using them for all sorts of projects, i.e. communicating between 2x arduinos or 2x teensys. Great bit of kit.

24.04.2023

B**3

Qualitativ hochwertig

Gutes Produkt, kommt in einer ordentlichen Verpackung. Funktionalität einwandfrei. Im Gegensatz zu MAX485 muss beim MAX13487 Chip die Übertragungsrichtung nicht händisch geschaltet werden was sehr bequem ist. Zu den negativen Punkten: es wäre wünschenswert den Durchmesser der Montagelöcher in der Produktbeschreibung mit anzugeben. Diese sind M2 (Grüße an denjenigen der diese Frage mit "kann ich nicht sagen" beantwortet hat: eine solche Antwort hilft _überhaupt_ nicht weiter). Und da wäre noch der Preis. Günstigere MAX13487-Alternativen funktionieren genauso gut (vielleicht nicht bei Randbedingungen wie dem versprochenen 15kV ESD-Schutz, dies müsste aber extra getestet werden). Also als Einzelbestellung an der Preisschmerzgrenze noch OK. Wenn man aber mehrere davon braucht, wird's schnell happig.

5.02.2024

J**.

Essayé avec Raspberry et Arduino

Marche parfait...

12.07.2019

M**M

Quality gear

Great quality, DSD never let's you down. Don't bother with cheaper alternatives as they rarely work.

11.11.2025

S**M

Contenta. Cumple su cometido.

Contenta. Está funcionando a las mil maravillas

16.05.2023

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

C$1830

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered 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 Nicaragua.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Brand	DSD TECH
Product Dimensions	5.08 x 1.78 x 1.78 cm; 15 g
Item model number	SH-U12
Manufacturer	DSD TECH
Color	blue
Processor Brand	Raspberry Pi
Processor Count	1
Wireless Type	802.11b
Hardware Platform	Arduino
Operating System	Raspberry Pi OS
Are Batteries Included	No
Item Weight	15 g

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

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Specifications

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Common Questions