---
product_id: 71299671
title: "DSD TECH SH-U12 RS485 to TTL 5V Board with MAX13487 Chip for Raspberry Pi Arduino and Other MCU"
brand: "dsd tech"
price: "฿1107"
currency: THB
in_stock: true
reviews_count: 13
category: "Dsd Tech"
url: https://www.desertcart.co.th/products/71299671-dsd-tech-sh-u12-rs485-to-ttl-5v-board-max13487
store_origin: TH
region: Thailand
---

# 15KV ESD & TVS protection Supports 128 slave devices 500Kbps high-speed transmission DSD TECH SH-U12 RS485 to TTL 5V Board with MAX13487 Chip for Raspberry Pi Arduino and Other MCU

**Brand:** dsd tech
**Price:** ฿1107
**Availability:** ✅ In Stock

## Summary

> 🔌 Connect smarter, faster, and safer — don’t get left offline!

## Quick Answers

- **What is this?** DSD TECH SH-U12 RS485 to TTL 5V Board with MAX13487 Chip for Raspberry Pi Arduino and Other MCU by dsd tech
- **How much does it cost?** ฿1107 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/71299671-dsd-tech-sh-u12-rs485-to-ttl-5v-board-max13487)

## Best For

- dsd tech enthusiasts

## Why This Product

- Trusted dsd tech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Withstand:** Robust 15KV ESD and TVS overvoltage protection shields your setup from electrical hazards.
- • **Rock-Solid Stability:** MAX13487 chip from MAXIM ensures ultra-reliable RS485 to TTL conversion for mission-critical projects.
- • **Plug & Play Simplicity:** Seamlessly integrates with Raspberry Pi, Arduino, and other MCUs—get your network running instantly.
- • **Lightning-Fast Data Flow:** Experience blazing 500Kbps transmission speeds that keep your multi-device network in perfect sync.
- • **Trusted Support & Warranty:** Backed by 1-year replacement and expert tech support with guaranteed 24-hour response time.

## Overview

The DSD TECH SH-U12 RS485 to TTL 5V Board leverages the MAX13487 chip to deliver stable, high-speed serial communication up to 500Kbps. Designed for Raspberry Pi, Arduino, and other MCUs, it supports multi-machine networks with up to 128 slave devices. Featuring 15KV ESD and TVS overvoltage protection, LED status indicators, and backed by a 1-year warranty with responsive customer support, this board is engineered for reliable, professional-grade connectivity.

## Description

With this RS485 to TTL board, you can quickly connect to the RS485 network, suitable for Raspberry Pi, Arduino,Robot and other MCU. Main Chip: MAX13487 from MAXIM Lead PINS: RS485: A +, B-, GND 5V TTL: GND,RXD,TXD,5V0 HIGH QUALITY With 15KV ESD protection and TVS(Transient Voltage Suppressor) overvoltage protection. High speed Transmission rate up to 500Kbps, Support multi-machine communication, allowing up to 128 slave devices Packing List: 1 X SH-U12 TTL to RS485 Board WARRANTY: DSD TECH back this TTL to RS485 Board with 12 months warranty.If you meet any question, Please contact us, We will fix your issue within 24 hours.

Review: Solved my issues perfectly - So I did not see any reviews for this product but wanted to write something up. I needed to use a Raspberry Pi to connect to a BACnet network and I needed to read and write serial data. I really thought the Raspberry pi would work by itself but had issues with the connection I tapped into. I was reading at the wrong voltage and needed to step over. This device allowed me to connect on the serial tap and it works amazingly. Every script I wrote previously and have tried to debug to figure out why it was not working were now working. I may not be testing this to its limits but it was able to allow me to get the voltage to the appropriate level for me to read and write on the serial channel.
Review: Works out of the box! - Works great. I use it to control a vfd Via rs485.

## Features

- With this RS485 to TTL board, you can quickly connect to the RS485 network, suitable for Raspberry Pi, Arduino,Robot and other MCU
- Main chip is MAX13487 from MAXIM, High stability.LED indication for TXD,RXD, Power
- With 15KV ESD protection and TVS overvoltage protection
- Transmission rate up to 500Kbps, Support multi-machine communication, allowing up to 128 slave devices
- Customer Support: DSD TECH provides permanent technical support and 1 year product replacement service for this RS485 to TTL 5V Board.All questions will be answered within 1 working day.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07B667STP |
| Best Sellers Rank | #1,788 in Single Board Computers (Computers & Accessories) |
| Customer Reviews | 4.2 4.2 out of 5 stars (184) |
| 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 |

## Images

![DSD TECH SH-U12 RS485 to TTL 5V Board with MAX13487 Chip for Raspberry Pi Arduino and Other MCU - Image 1](https://m.media-amazon.com/images/I/61FpiuI3MbL.jpg)

## Questions & Answers

**Q: Are there any instructions on how to use it? Send or receive Messages?**
A: 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.

**Q: Would it work with rs422?**
A: Currently, only RS485 is supported.

**Q: this item include the cables on the picture?**
A: 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.

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Solved my issues perfectly
*by R***R on June 20, 2018*

So I did not see any reviews for this product but wanted to write something up. I needed to use a Raspberry Pi to connect to a BACnet network and I needed to read and write serial data. I really thought the Raspberry pi would work by itself but had issues with the connection I tapped into. I was reading at the wrong voltage and needed to step over. This device allowed me to connect on the serial tap and it works amazingly. Every script I wrote previously and have tried to debug to figure out why it was not working were now working. I may not be testing this to its limits but it was able to allow me to get the voltage to the appropriate level for me to read and write on the serial channel.

### ⭐⭐⭐⭐⭐ Works out of the box!
*by A***R on January 16, 2026*

Works great. I use it to control a vfd Via rs485.

### ⭐⭐⭐⭐⭐ It Works
*by R***. on November 4, 2019*

This RS485 converter works as advertised. My application only required 9600 baud but operation was flawless with an Arduino Mega 2560. One thing I found was that, for my application, I needed to reverse the "A" and "B" RS485 signal lines. I don't know if this is an error on the board silk screen or my slave device label is in error. I am using the SH-U12 to talk to an ABB PID pump controller using Modbus protocol. If you can't get the converter to talk to your RS485 buss, try reversing the connection. This has worked so well, I am now using three of these!

## Frequently Bought Together

- DSD TECH SH-U12 RS485 to TTL 5V Board with MAX13487 Chip for Raspberry Pi Arduino and Other MCU
- ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects
- 5 PCS RS-485 MAX485 Transceiver Chip Module TTL to RS-485 Module SCM Development Board

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.th/products/71299671-dsd-tech-sh-u12-rs485-to-ttl-5v-board-max13487](https://www.desertcart.co.th/products/71299671-dsd-tech-sh-u12-rs485-to-ttl-5v-board-max13487)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-10*