---
product_id: 301051735
title: "2 Pack TTL to RS485 Adapter Module 3.3V 5V 485 to TTL Signal Single Chip Serial Port Level Converter Borad with RXD, TXD Indicator"
brand: "almocn"
price: "HK$125"
currency: HKD
in_stock: true
reviews_count: 13
category: "Almocn"
url: https://www.desertcart.hk/products/301051735-2-pack-ttl-to-rs485-adapter-module-3-3v-5v
store_origin: HK
region: Hong Kong
---

# Wide 3.0V-30V voltage range TXD & RXD real-time data indicators Lightning & anti-jamming protection 2 Pack TTL to RS485 Adapter Module 3.3V 5V 485 to TTL Signal Single Chip Serial Port Level Converter Borad with RXD, TXD Indicator

**Brand:** almocn
**Price:** HK$125
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your serial communication game with ALMOCN’s smart, shielded adapters!

## Quick Answers

- **What is this?** 2 Pack TTL to RS485 Adapter Module 3.3V 5V 485 to TTL Signal Single Chip Serial Port Level Converter Borad with RXD, TXD Indicator by almocn
- **How much does it cost?** HK$125 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/301051735-2-pack-ttl-to-rs485-adapter-module-3-3v-5v)

## Best For

- almocn enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Convenience:** Onboard automatic Tx/Rx switching frees up microcontroller pins, simplifying your design.
- • **Robust Signal Integrity:** Advanced anti-jamming and lightning protection ensure stable, interference-free communication.
- • **Network-Ready Scalability:** Connect up to 40 nodes on the same RS485 bus for expansive multi-device setups.
- • **Real-Time Data Monitoring:** Built-in TXD and RXD LEDs keep you instantly informed of data transmission status.
- • **Seamless Multi-Voltage Compatibility:** Effortlessly supports both 3.3V and 5V systems for versatile integration.

## Overview

The ALMOCN 2 Pack TTL to RS485 Adapter Modules provide reliable serial port level conversion with a broad voltage range (3.0V-30V), integrated TXD/RXD indicator LEDs for real-time data monitoring, and built-in lightning and anti-jamming protection. Designed for professional-grade multi-node RS485 networks, these modules support up to 40 devices and feature automatic Tx/Rx switching to optimize microcontroller pin usage, making them ideal for robust, scalable industrial and IoT applications.

## Description

Buy ALMOCN 2 Pack TTL to RS485 Adapter Module 3.3V 5V 485 to TTL Signal Single Chip Serial Port Level Converter Borad with RXD, TXD Indicator: Serial Adapters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Works as advertised. Mounting Holes match Adafruit Feather boards - Works great for driving differential RS485 signal from a 3.3-3.7v supply. Unlike many 485 breakouts it does not require an RSE/enable pin; Tx/Rx switching is handled onboard when data is detected on the incoming Tx TTL line, which will save you a microcontroller pin. Screw terminals are good quality. Output common (labeled Earth) is not connected to the board/chip GND, if necessary for your circuit (e.g. DMX) you can bridge the pins with a small wire or ground lift switch. I haven't found a datasheet for the board yet; since this is likely a clone of another design, it doesn't have any identification numbers or name.
Review: Not suitable for 3.3V supply - It works but the 485 driver IC is not rated for 3.3V as advertised. At 3.3V it will work for some random length of time before it stops working and requires a power cycle.

## Features

- Voltage range:DC 3.0V-30V, the limit voltage of 33V, the minimum voltage is higher than 2.8V.
- TXD & RXD Indicator: the TTL to RS485 Adapter is designed with Transmit Data indicator light and Receive Data indicator light, convenient for your monitoring.
- Perfectly compatible with 3.3V and 5.0V signals,the 485 bus is with lightning protection and anti-jamming function, with high EMC, EMI performance.
- Using anti-jamming alignment and copper to prevent signal interference.
- It supports communication of multiple machines that the same network can be connected to at least 40 nodes.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08XLT21S6 |
| Best Sellers Rank | #109 in Serial Adapters |
| Customer Reviews | 3.7 3.7 out of 5 stars (48) |
| Date First Available | February 26, 2021 |
| Item Weight | 0.634 ounces |
| Item model number | 8aab01e7-86a3-4099-a10e-1b2f8f57d8bb |
| Manufacturer | ALMOCN |
| Package Dimensions | 3.98 x 2.99 x 0.71 inches |

## Product Details

- **Brand:** ALMOCN
- **Color:** white
- **Compatible Devices:** Computer, Microcontroller, Industrial Control System, Robot, Test Equipment
- **Connector Type:** Lightning
- **Specific Uses For Product:** Industrial Control System, Microcontroller

## Images

![2 Pack TTL to RS485 Adapter Module 3.3V 5V 485 to TTL Signal Single Chip Serial Port Level Converter Borad with RXD, TXD Indicator - Image 1](https://m.media-amazon.com/images/I/71ZVbbjvUVL.jpg)

## Questions & Answers

**Q: Can these be uned with an ESP32 (having 3.3v pins)?**
A: Perfectly compatible with 3.3V and 5.0V signals
Voltage range:DC 3.0V-30V, 
the limit voltage of 33V, 
the minimum voltage is higher than 2.8V.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as advertised. Mounting Holes match Adafruit Feather boards
*by J***N on July 13, 2022*

Works great for driving differential RS485 signal from a 3.3-3.7v supply. Unlike many 485 breakouts it does not require an RSE/enable pin; Tx/Rx switching is handled onboard when data is detected on the incoming Tx TTL line, which will save you a microcontroller pin. Screw terminals are good quality. Output common (labeled Earth) is not connected to the board/chip GND, if necessary for your circuit (e.g. DMX) you can bridge the pins with a small wire or ground lift switch. I haven't found a datasheet for the board yet; since this is likely a clone of another design, it doesn't have any identification numbers or name.

### ⭐⭐ Not suitable for 3.3V supply
*by A***X on July 15, 2025*

It works but the 485 driver IC is not rated for 3.3V as advertised. At 3.3V it will work for some random length of time before it stops working and requires a power cycle.

### ⭐⭐⭐⭐ Good quality
*by J***G on August 8, 2025*

Good price works as advertised.

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-21*