---
product_id: 57631706
title: "KNACRORS232 to TTL Serial Port Module Bidirectional Transceiver Compatible with 3.3V 5V Hardware Automatic Flow Control with Over-Voltage Protection"
brand: "knacro"
price: "€ 12.00"
currency: EUR
in_stock: true
url: https://www.desertcart.ie/products/57631706-knacrors232-to-ttl-serial-port-module-bidirectional-transceiver-compatible-3
store_origin: IE
region: Ireland
---

# Over-Voltage Protection Bidirectional Transceiver 3.3V-5V Compatibility KNACRORS232 to TTL Serial Port Module Bidirectional Transceiver Compatible with 3.3V 5V Hardware Automatic Flow Control with Over-Voltage Protection

**Brand:** knacro
**Price:** € 12.00
**Availability:** ✅ In Stock

## Summary

> 🔧 Transform Your Tech Game!

## Quick Answers

- **What is this?** KNACRORS232 to TTL Serial Port Module Bidirectional Transceiver Compatible with 3.3V 5V Hardware Automatic Flow Control with Over-Voltage Protection by knacro
- **How much does it cost?** € 12.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/57631706-knacrors232-to-ttl-serial-port-module-bidirectional-transceiver-compatible-3)

## Best For

- knacro enthusiasts

## Why This Product

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

## Key Features

- • **Built-in Protection:** Equipped with over-voltage protection to safeguard your valuable equipment.
- • **Compact & Efficient:** Space-saving design that minimizes power consumption while maximizing performance.
- • **User-Friendly Design:** Designed for tech enthusiasts, making complex tasks like firmware updates a breeze.
- • **Seamless Connectivity:** Effortlessly bridge RS232 and TTL devices with this versatile transceiver.
- • **Automatic Flow Control:** Enjoy hassle-free data transmission with hard flow control functionality.

## Overview

The KNACRO RS232 to TTL Serial Port Module is a bidirectional transceiver designed for seamless communication between RS232 and TTL devices. It operates at 3.3V to 5V and features built-in over-voltage protection, making it ideal for various applications, including firmware updates and GPS signal reading. With automatic flow control and a compact design, this module is perfect for tech-savvy users looking to enhance their projects.

## Description

KNACRORS232 to TTL Serial Port Module Bidirectional Transceiver Compatible with 3.3V 5V Hardware Automatic Flow Control with Over-Voltage Protection

## Features

- RS232 female to TTL Serial Port Bidirectional Transceiver Module, for SST, STC, NXP microcontroller Download. Can also be used for other purposes, such as hard disk repair, write router firmware, GPS signal reading and other functions, but requires users to have a certain level of technology can be achieved.
- This module contains over-voltage protection circuit to better protect your computer and equipment.
- This module contains hard flow control, and the TTL side of the module RTS signal is not dangling, is set to enable bidirectional transceiver function by default. Prevent SP3232 from floating in some pins, causing chip oscillation and introducing high-frequency interference and increasing power consumption, thus affecting the normal operation of the entire chip.
- RS232 communication chip: SP3232. DB9 Interface Type: Female.
- Operating voltage: 3V-5V; with four bidirectional transient suppression diode signal voltage protection.

## Images

![KNACRORS232 to TTL Serial Port Module Bidirectional Transceiver Compatible with 3.3V 5V Hardware Automatic Flow Control with Over-Voltage Protection - Image 1](https://m.media-amazon.com/images/I/81WrcLLDonL.jpg)
![KNACRORS232 to TTL Serial Port Module Bidirectional Transceiver Compatible with 3.3V 5V Hardware Automatic Flow Control with Over-Voltage Protection - Image 2](https://m.media-amazon.com/images/I/818T8Z5YEfL.jpg)
![KNACRORS232 to TTL Serial Port Module Bidirectional Transceiver Compatible with 3.3V 5V Hardware Automatic Flow Control with Over-Voltage Protection - Image 3](https://m.media-amazon.com/images/I/81lDgdMCyKL.jpg)
![KNACRORS232 to TTL Serial Port Module Bidirectional Transceiver Compatible with 3.3V 5V Hardware Automatic Flow Control with Over-Voltage Protection - Image 4](https://m.media-amazon.com/images/I/817cGp1rFcL.jpg)
![KNACRORS232 to TTL Serial Port Module Bidirectional Transceiver Compatible with 3.3V 5V Hardware Automatic Flow Control with Over-Voltage Protection - Image 5](https://m.media-amazon.com/images/I/71fAkcZD2bL.jpg)

## Frequently Bought Together

- KNACRO RS232 to TTL Serial Port Module Bidirectional Transceiver Compatible with 3.3V 5V Hardware Automatic Flow Control with Over-Voltage Protection
- 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
- EDGELEC 120pcs Breadboard Jumper Wires 10cm 15cm 20cm 30cm 40cm 50 cm 100cm Wire Length Optional Dupont Cable Assorted Kit Male to Female Male to Male Female to Female Multicolored Ribbon Cables

---

## 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.ie/products/57631706-knacrors232-to-ttl-serial-port-module-bidirectional-transceiver-compatible-3](https://www.desertcart.ie/products/57631706-knacrors232-to-ttl-serial-port-module-bidirectional-transceiver-compatible-3)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-26*