# Serial Comm Tester – RS232/485

> USB OTG serial tester for RS232/RS485 communication. Fast and simple tool

Canonical page: [https://chrome-stats.com/d/com.lfc.Serial\_Comm\_Tester\_RS232\_485](https://chrome-stats.com/d/com.lfc.Serial_Comm_Tester_RS232_485)

## Overview

- **ID:** `com.lfc.Serial_Comm_Tester_RS232_485`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** LFC LAB
- **Category:** PRODUCTIVITY
- **Downloads:** 136
- **Version:** API36Update
- **Last updated:** 2026-07-22
- **First published:** 2026-01-17
- **Publisher country:** KR
- **Size:** 43 MB
- **Data as of:** 2026-09-12
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.lfc.Serial_Comm_Tester_RS232_485)
- **Website:** [https://lfc-soft.blogspot.com/](https://lfc-soft.blogspot.com/)
- **Privacy policy:** [https://hostramus.tistory.com/pages/Serial-Communication-Tester](https://hostramus.tistory.com/pages/Serial-Communication-Tester)

## Description

&quot;Serial Comm Tester – RS232/485&quot; is an Android application designed to test RS232 and RS485 serial communication quickly and easily using your smartphone.<br>With USB OTG support, you can connect serial devices directly to your Android device and perform communication tests without a PC or laptop.<br>It is optimized for on-site testing, maintenance, and basic debugging tasks.<br><br><br>USB OTG–Based Serial Communication<br>• Connect your Android device via USB OTG<br>• Works with USB to RS232 / RS485 converters<br>• Perform serial communication tests without additional hardware or PCs<br><br>RS232 / RS485 Support<br>• Supports widely used industrial serial interfaces<br>• Suitable for equipment inspection, wiring checks, and communication validation<br>• Ideal for field engineers and developers<br><br>Simple and Intuitive Interface<br>• Clean and straightforward UI for quick testing<br>• Easy to send and receive serial data<br>• Designed for efficient use in industrial environments<br><br>Fast Communication Testing<br>• Verify communication status in real time<br>• Quickly identify connection or data issues<br>• Useful for initial setup and troubleshooting<br><br>Recommended For<br>• Field engineers working with RS232 / RS485 devices<br>• Developers testing USB serial communication<br>• PLC, sensor, inverter, and industrial equipment maintenance<br>• Anyone who needs a simple serial testing tool without a PC<br><br>Typical Use Cases<br>• Checking serial communication after equipment installation<br>• Troubleshooting communication issues on site<br>• Testing serial data transmission during development<br>• Using a smartphone as a portable serial test tool<br><br>⚠ Notes<br>• Requires an Android device that supports USB OTG<br>• A USB to RS232 / RS485 converter is required<br>• Behavior may vary depending on the connected converter and device

## Rankings

- #1,861,903 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.WAKE_LOCK`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.gms.permission.AD_ID`
- `com.lfc.Serial_Comm_Tester_RS232_485.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.lfc.Serial_Comm_Tester_RS232_485)