# Modbus/Serial Monitor

> Modbus RTU monitor & serial terminal for USB and Bluetooth devices

Canonical page: [https://chrome-stats.com/d/com.modbusserialmonitor](https://chrome-stats.com/d/com.modbusserialmonitor)

## Overview

- **ID:** `com.modbusserialmonitor`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** SyncLabs.
- **Category:** TOOLS
- **Downloads:** 157
- **Version:** 1.0.0
- **Last updated:** 2026-05-11
- **First published:** 2026-05-11
- **Publisher country:** LK
- **Size:** 23 MB
- **Data as of:** 2026-09-05
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.modbusserialmonitor)
- **Website:** [https://synclabsdev.blogspot.com](https://synclabsdev.blogspot.com/)
- **Privacy policy:** [https://sites.google.com/view/modserialmonitor/home](https://sites.google.com/view/modserialmonitor/home)

## Description

Modbus / Serial Monitor is a professional-grade tool for engineers, makers, and industrial technicians who need to communicate with serial devices directly from their Android phone or tablet.<br><br>Connect via USB or Bluetooth<br>Connect to RS-485/RS-232 converters over USB OTG, or pair with BLE serial modules including Nordic UART (NUS), HM-10, JDY-08, and ESP32 BLE UART.<br><br>Modbus RTU Support<br>Send and receive Modbus RTU frames with configurable device ID, function code, register address, and value. Supports FC01–FC06 and FC16. Built-in CRC calculation — no manual byte counting needed.<br><br>Quick Messages<br>Save frequently used command sequences and send them with a single tap. Perfect for repetitive testing workflows.<br><br>Modbus Profiles<br>Configure and monitor multiple sensor registers simultaneously. View live register readings from your Modbus devices in a clean, structured layout.<br><br>Serial Monitor<br>Raw serial terminal with timestamped log output. View all incoming and outgoing bytes in real time.<br><br>Key Features<br><br>USB Serial (CH340, CP210x, FTDI, and more)<br>BLE Serial (Nordic UART, HM-10/AT-09, ESP32)<br>Modbus RTU frame builder with CRC<br>Multi-register sensor monitoring<br>Quick message shortcuts<br>Dark theme optimized for workshop environments<br>Landscape mode with split terminal view<br>Ideal for RS-485 bus diagnostics, sensor commissioning, PLC testing, and embedded development.

## Rankings

- #1,796,818 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_FINE_LOCATION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.BLUETOOTH`
- `android.permission.BLUETOOTH_ADMIN`
- `android.permission.BLUETOOTH_CONNECT`
- `android.permission.BLUETOOTH_SCAN`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.USB_PERMISSION`
- `android.permission.WAKE_LOCK`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.gms.permission.AD_ID`
- `com.modbusserialmonitor.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Similar extensions and apps

- [Modbus Monitor](https://chrome-stats.com/d/com.Bhavan.Hubble) — 38,205 users, 4.50 / 5
- [Modbus Viewer: TCP, RTU, BT](https://chrome-stats.com/d/com.modbusviewer) — 3,067 users
- [Modbus Field Tester](https://chrome-stats.com/d/com.rs485.tester) — 939 users
- [Modbus RTU Server](https://chrome-stats.com/d/com.lfc.apps.modbus_rtu_server) — 136 users
- [Modbus RTU Tool](https://chrome-stats.com/d/com.mehmetaj.modbusrtu) — 51 users
- [Modbus RTU Station](https://chrome-stats.com/d/com.dreamsoftware.modbus_rtu_master) — 293 users
- [Modbus Monitor Advanced](https://chrome-stats.com/d/com.Bhavan.Galex) — 4,923 users
- [ModBusWiFi](https://chrome-stats.com/d/com.freeunit.modbuswifi) — 77 users
- [MODBUS TESTER PRO](https://chrome-stats.com/d/com.modbustester.test) — 6 users
- [USB Serial Monitor for u-blox](https://chrome-stats.com/d/com.cmy2345.usb.serial.monitor) — 18 users
- [Grab BT](https://chrome-stats.com/d/com.emeautomation.grabbt) — 8 users
- [Bluetooth Serial Monitor](https://chrome-stats.com/d/com.csa.btserialmonitor) — 14,095 users

---

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