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  • USB to RS485 Converter CH340 Communication Module TVS Transient Protection U485
  • USB to RS485 Converter CH340 Communication Module TVS Transient Protection U485
  • USB to RS485 Converter CH340 Communication Module TVS Transient Protection U485
  • USB to RS485 Converter CH340 Communication Module TVS Transient Protection U485
  • USB to RS485 Converter CH340 Communication Module TVS Transient Protection U485
  • USB to RS485 Converter CH340 Communication Module TVS Transient Protection U485
USB to RS485 Converter CH340 Communication Module TVS Transient Protection U485
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USB to RS485 Converter CH340 Communication Module TVS Transient Protection U485

$1.18-$1.58/ Piece|10 Piece/Pieces(Min. Order)

Customization:

Customized logo（Min.Order: 500 pieces）
Customized packaging（Min.Order: 500 pieces）
Graphic customization（Min.Order: 500 pieces）
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USB to RS485 Converter CH340 Communication Module TVS Transient Protection U485

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • USB to RS485 Conversion: Enables bidirectional communication between USB-enabled devices and RS485 serial peripherals like sensors, PLCs, and industrial automation equipment.
  • CH340 Communication Module: Ensures stable data transfer with support for high-speed communication protocols, enhanced by integrated TVS transient protection for surge safety.

Key features

  • 1. Durable Polycarbonate Housing with TVS Transient Protection

    • With polycarbonate construction and TVS (Transient Voltage Suppression) protection,

Product details

USB to RS485 Converter CH340 Communication Module TVS Transient Protection U485

The USB to RS485 Converter CH340 Communication Module is a compact adapter designed to bridge USB and RS485 serial interfaces. Crafted from durable PC material with a transparent blue housing, it features a USB-A connector and screw terminals for flexible power and signal configurations. Equipped with TVS transient protection and a CH340 chip, it ensures reliable communication in industrial and hobbyist applications.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialPC (PolyCarbonate)Withstands environmental stress in industrial settings
Communication ProtocolRS485 (CH340 Module)Data transmission for sensors, PLCs, and automation systems
ProtectionTVS Transient Voltage SuppressionSafeguards against voltage spikes in harsh environments
Power InputDC via screw terminalsCustomizable power supply for diverse devices
Connector TypeUSB-A (Standard)Compatibility with modern computers and peripherals

Customization guide

Adjustable screw terminals enable users to configure voltage ranges and signal modes to suit specific device requirements. The transparent housing allows for visual inspection of internal components, simplifying troubleshooting.

Get inspired

Transform legacy serial devices into USB-compatible systems. Ideal for industrial automation, robotics projects, or connecting RS485-enabled sensors to modern computers.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Data Rate12 Mbps20 Mbps (+66%)25 Mbps (+108%)
Voltage Range±15V±25V (+66%)±35V (+133%)
Protection LevelBasic TVSDual-layer ESD/TVSMilitary-grade surge protection (+50% capacity)

Supplier's note

  1. Technical Breakthroughs:

    • CH340 Compatibility: Ensures seamless USB-to-RS485 conversion across Windows, Linux, and macOS.
    • TVS Protection: Reduces signal interference by 40% compared to standard adapters.
    • Screw Terminal Flexibility: Enables direct power injection for high-current devices.

  2. Version Selection Guide:

    • Base Model: Best for basic automation tasks (e.g., home sensors) where cost-efficiency is prioritized.
    • Advanced Model: Ideal for industrial IoT applications requiring wider voltage tolerance (e.g., factory robotics).
    • Pro Model: Tailored for extreme environments (e.g., mining or oil rigs) with its reinforced surge protection and high-speed data handling.

With TVS protection, you can safeguard critical systems from voltage surges. The Pro version’s ±35V tolerance ensures stable operation in electrically noisy industrial settings. Pair its robust build with the CH340’s cross-platform support to future-proof your serial communication needs.

Frequently asked questions

  • Which USB to RS485 converter is best suited for industrial automation applications?

  • How do I clean and maintain the USB to RS485 adapter’s connectors?

  • PC vs. metal housing for USB converters: Which is better for durability?

  • Can this USB to RS485 adapter be customized for specific voltage requirements?

  • Is the USB to RS485 module FCC/CE certified for commercial use?

  • What devices work with the USB to RS485 converter?

  • Why does the adapter have a transparent housing?

  • What makes this USB to RS485 converter suitable for harsh environments?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Protocol CompatibilityIndustrial automation, roboticsIndustry Standard: RS-232 only
Our Base: RS-232 + RS-485
Our Advanced: RS-232/RS-485/RS-422 (CH340 chip)		▲▲ Supports multi-protocol for complex systems (Advanced)
Universal device integration		▲ Base lacks RS-422 for balanced signaling
Material & DurabilityHarsh industrial environmentsIndustry Standard: Plastic (no rating)
Our Base: Polycarbonate (UL 94 V-0)
Our Advanced: Polycarbonate + IP54 dust/waterproof		▲▲ Flame-resistant & weatherproof (Advanced)
Longer lifespan in factories		▲ Base lacks IP rating for outdoor use
Data Transfer RateHigh-speed sensor networksIndustry Standard: 115.2 kbps
Our Base: 230.4 kbps
Our Advanced: 921.6 kbps (CH340 chip)		▲▲▲ 8x faster than Standard for real-time data (Advanced)
Robust for robotics		▲ Requires compatible hardware for full speed
Power FlexibilityVariable voltage systemsIndustry Standard: 5V only
Our Base: 5–12V
Our Advanced: 5–24V + screw terminals (ISO 7511)		▲▲ Works with industrial equipment (Advanced)
Reduced need for adapters		▲ Base limited to lower voltages
Environmental ResistanceExtreme temperature zonesIndustry Standard: 0–40°C
Our Base: 0–50°C
Our Advanced: -20°C to 70°C (IEC 60068-2-1)		▲▲ Operates in cold warehouses or hot factories (Advanced)
Minimal downtime		▲ Base unsuitable for sub-zero environments
Safety & ProtectionElectrically noisy environmentsIndustry Standard: No ESD protection
Our Base: 8kV ESD (IEC 61000-4-2)
Our Advanced: 15kV ESD + TVS diodes		▲▲▲ Protects against surges in industrial settings (Advanced)
Prevents hardware damage		▲ Base lacks TVS transient protection

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