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CH340 Isolated USB to TTL (Serial) Module with USB-A Connector MCS-86C

Reference RBD-3498

CH340 Isolated USB to TTL Module with 1500V electrical isolation
Supports high-speed communication up to 921600bps
Switchable logic levels 5V / 3.3V with regulated output
Built-in optocoupler isolation & isolated power supply
LED indicators for Power, TX, and RX status
Compatible with Windows, Linux, and MacOS systems

Description
Product Details

Description

The CH340 Isolated USB to TTL Module is a professional-grade serial communication interface designed for safe and reliable data transfer in electrically sensitive environments. Built around the trusted CH340 USB-to-serial chip and enhanced with high-speed optocoupler isolation, this module provides up to 1500V electrical isolation between the USB and TTL sides. Because it integrates an isolated power supply and supports switchable 5V or 3.3V logic levels, it ensures safe programming and debugging of microcontrollers without ground loop risks. With baud rates up to 921600bps and plug-and-play compatibility across Windows, Linux, and MacOS, the MCS-86C module is ideal for embedded system development, industrial automation, and field maintenance applications. Featured By RoboticsBD.

Product Images are shown for illustrative purposes only and may differ from the actual product.

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Features:

1500V Electrical Isolation – Protects connected devices from voltage spikes and interference.
High-Speed Communication – Supports baud rates up to 921600bps for fast data transfer.
Switchable Voltage Levels – Easily select 5V or 3.3V logic for compatibility with various MCUs.
Integrated Isolated Power Supply – No need for external isolated power modules.
Optocoupler Signal Protection – Ensures stable and noise-resistant serial communication.
Wide OS Compatibility – Works with Windows, Linux, and Mac (32/64-bit).
LED Status Indicators – Displays power, transmit, and receive activity clearly.
Reverse Diode Protection – Adds extra safety during MCU programming.
Compact PCB with Isolation Slot – >3mm isolation distance for enhanced protection.

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Applications:

Microcontroller Programming & Debugging – Safe flashing and serial monitoring.
Industrial Automation Systems – Isolated communication with PLCs and field devices.
IoT Development – Reliable interface for ESP, STM32, and Arduino boards.
Sensitive Equipment Communication – Prevents damage from ground loops.
Field Maintenance & Diagnostics – Ideal for on-site technical servicing.
Robotics Systems – Stable communication for embedded controllers.

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General Specifications
Model	MCS-86C
Main Chip	CH340
Isolation Voltage	1500V
Communication Rate	Up to 921600bps
Input Voltage	5V / 3.3V (Switchable)
Max Output Current	100mA
LED Indicators	Power, TX, RX
Operating System Support	Windows / Linux / Mac (32/64-bit)
Dimensions	50mm × 24mm (65mm × 24mm with USB)
Signal Type	TTL Level Only (Not RS-232)
Shipment Weight	0.015 kg
Shipment Dimensions	7 × 4 × 3 cm

Please allow 5% measuring deviation due to manual measurement.

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Package Includes:

1 x CH340 Isolated USB to TTL (Serial) Module with USB-A Connector MCS-86C

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Product Details

Reference RBD-3498

In stock 29 Items

Specific References

EAN13: 3498

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