---
product_id: 439380355
title: "2Pack TTL to RS485 Adapter Module, 485 to TTL 3.3V/5.0V Signals Serial Port Power Supply Converter with Indicator Lights"
brand: "atnsinc"
price: "€ 9.08"
currency: EUR
in_stock: true
reviews_count: 2
category: "Atnsinc"
url: https://www.desertcart.sk/products/439380355-2pack-ttl-to-rs485-adapter-module-485-to-ttl-3
store_origin: SK
region: Slovakia
---

# Wide 3.0-30V voltage range Up to 256000bps baud rate -40°C to +85°C operating temp 2Pack TTL to RS485 Adapter Module, 485 to TTL 3.3V/5.0V Signals Serial Port Power Supply Converter with Indicator Lights

**Brand:** atnsinc
**Price:** € 9.08
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your serial communication game with pro-grade speed and resilience!

## Quick Answers

- **What is this?** 2Pack TTL to RS485 Adapter Module, 485 to TTL 3.3V/5.0V Signals Serial Port Power Supply Converter with Indicator Lights by atnsinc
- **How much does it cost?** € 9.08 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/439380355-2pack-ttl-to-rs485-adapter-module-485-to-ttl-3)

## Best For

- atnsinc enthusiasts

## Why This Product

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

## Key Features

- • **Visual TX/RX Monitoring:** Integrated transmit and receive indicator LEDs give you instant, at-a-glance data flow status.
- • **Lightning-Fast Data Flow:** Blazing baud rates up to 256000bps ensure seamless, real-time serial communication.
- • **Built to Brave the Elements:** Operates reliably from freezing -40°C to scorching +85°C, perfect for industrial-grade deployments.
- • **Power Your Projects Anywhere:** Supports a broad 3.0V to 30V input range for ultimate flexibility in diverse setups.
- • **Robust Long-Distance Signal Integrity:** Anti-jamming, lightning protection, and 120Ω termination enable stable communication up to 800 meters.

## Overview

This 2-pack TTL to RS485 adapter module converts 3.3V/5.0V TTL signals to RS485 with a wide 3.0-30V power range, supports baud rates up to 256000bps, and operates in extreme temperatures (-40°C to +85°C). Featuring TXD/RXD indicator lights and built-in lightning and EMI protection, it ensures reliable, long-distance serial communication up to 800 meters, ideal for multi-node industrial and IoT networks.

## Description

Features:1. Wide voltage power supply (3.0V ~ 30V), the limit voltage of 33V, it is recommended to use within 30V, the minimum voltage is higher than 2.8V.2. Has a very high EMC and EMI performance.3. Compatible with 3.3V and 5.0V signals, can match the module.4. With RXD, TXD signal indicator, send and receive situation panoramic view.5.With a standard 2.54 pitch pin, to facilitate your secondary development; With a terminal block and silicone wire, the use of very convenient.6. With 120 ohm matching resistance, shorted R0 can be enabled to match the resistance, recommended shorted for long-distance transmission.7. Support multi-machine communication, the same network can connect at least 40 nodes.8. Can be hot-swappable, there will be no signal to death phenomenon.9. Using anti-jamming alignment and copper to prevent signal interference.Package Included:1x TTL to RS485 Signal Converter Module1x 2.54 White Socket with 4P Lines

Review: This product has worked for me so far, but I am only transmitting data. Another reviewer stated, "Pay attention to the photo, it has the color coding exactly per the photo". The boards that were shipped to me came with a cable color coding of Black, Blue, Yellow and Red. When plugging this provided cable or harness, VCC is Black, TXD is Blue, RXD is White, and GND is Red. So, the mfg./shipper is using cables with different colors. Reading the other reviewer's comments, it was a bit confusing. I guess in short, believe the printing on the board for VCC, RX, TX and Ground. Switch the cable colors if you have the time and tools to do so.
Review: Pay attention to the photo, it has the color coding exactly per the photo, but you want red to be the +5 and the black to be ground, so I removed three of them and corrected that. Then I found the yellow wire which I didn't touch to be open, when they crimped the terminal on they sheared off the copper wire, so no connection was made. Lucky I had new terminals and a crimping kit to fix that. I could not find a schematic of this, but the RC time constant for the auto shift between transmit and receive is too short. As I could see with my oscilloscope receive noise, when that line should have been quiet. A small update, these do work OK, but the screw terminal quality, has issues with clamping onto a soldered dipped stranded 24AWG wire. This is bad enough I won't buy anymore of this model. As well the phillips screw driver head is so poorly made that I can't find a screw driver that will bite into them without much force to keep it from slipping.

## Features

- Operating voltage range: DC 3.0V ~ 30V; Baud rate: 110 ~ 256000bps; Operating temperature range: -40 ℃ to +85 ℃.
- Compatible with 3.3V and 5.0V signals; TXD & RXD Indicator: the TTL to RS485 Adapter is designed with Transmit Data indicator light and Receive Data indicator light, convenient for your monitoring.
- The 485 bus is with lightning protection and anti-jamming function, with high EMC, EMI performance. When using for long-distance transmission in the field, the module EARTH side please connect to the ground, can achieve well anti-interference and lightning protection function; for indoor short-distance transmission, it cannot connect to ground.
- Transmission Distance up to kilometers : with 850 meters of 2*1.5 cable to do the test, it is recommended to use within 800 meters, more than 800 meters plus repeaters.
- Package Included:1x TTL to RS485 Signal Converter Module+ 1x 2.54 White Socket with 4P Lines

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08ZNF55V9 |
| Best Sellers Rank | #10,164 in Computers ( See Top 100 in Computers ) #18 in Serial Adapters |
| Manufacturer | Atnsinc |
| Manufacturer reference | AUB08ZNF55V9 |
| Package Dimensions | 9.7 x 7.29 x 1.7 cm; 18 g |

## Product Details

- **Brand:** Atnsinc
- **Colour:** White
- **Compatible devices:** Various Electronic Devices
- **Connector type:** Lightning
- **Specific uses for product:** PC, Laptop

## Images

![2Pack TTL to RS485 Adapter Module, 485 to TTL 3.3V/5.0V Signals Serial Port Power Supply Converter with Indicator Lights - Image 1](https://m.media-amazon.com/images/I/71TS+BWyixL.jpg)

## Customer Reviews

### ⭐⭐⭐ Review
*by B***M on 7 November 2022*

This product has worked for me so far, but I am only transmitting data. Another reviewer stated, "Pay attention to the photo, it has the color coding exactly per the photo". The boards that were shipped to me came with a cable color coding of Black, Blue, Yellow and Red. When plugging this provided cable or harness, VCC is Black, TXD is Blue, RXD is White, and GND is Red. So, the mfg./shipper is using cables with different colors. Reading the other reviewer's comments, it was a bit confusing. I guess in short, believe the printing on the board for VCC, RX, TX and Ground. Switch the cable colors if you have the time and tools to do so.

### ⭐⭐ Review
*by I***R on 5 January 2022*

Pay attention to the photo, it has the color coding exactly per the photo, but you want red to be the +5 and the black to be ground, so I removed three of them and corrected that. Then I found the yellow wire which I didn't touch to be open, when they crimped the terminal on they sheared off the copper wire, so no connection was made. Lucky I had new terminals and a crimping kit to fix that. I could not find a schematic of this, but the RC time constant for the auto shift between transmit and receive is too short. As I could see with my oscilloscope receive noise, when that line should have been quiet. A small update, these do work OK, but the screw terminal quality, has issues with clamping onto a soldered dipped stranded 24AWG wire. This is bad enough I won't buy anymore of this model. As well the phillips screw driver head is so poorly made that I can't find a screw driver that will bite into them without much force to keep it from slipping.

## Frequently Bought Together

- Atnsinc 2Pack TTL to RS485 Adapter Module, 485 to TTL 3.3V/5.0V Signals Serial Port Power Supply Converter with Indicator Lights
- DSD TECH SH-U12 RS485 to TTL 5V Board with MAX13487 Chip for Raspberry Pi Arduino and Other MCU
- 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.sk/products/439380355-2pack-ttl-to-rs485-adapter-module-485-to-ttl-3](https://www.desertcart.sk/products/439380355-2pack-ttl-to-rs485-adapter-module-485-to-ttl-3)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-02*