The EBYTE E810 Series comprises industrial-grade USB to Serial Converters (supporting USB to RS485, RS232, RS422, and TTL) powered by premium chipsets (FTDI FT232H / WCH CH344Q / CH342 / CH340), featuring up to 4-port independent expansion, EMC Class 3 hardware-level surge protection, and up to 3KV high-voltage galvanic optical isolation for robust, noise-immune communication in harsh industrial IoT environments.
| Product Sub-Series | Covered Model SKUs | Supported Serial Interfaces | Core Chipset Solution | Max Baud Rate | EMC Protection & Optical Isolation | Enclosure & Installation |
|---|---|---|---|---|---|---|
| Premium Isolation 1-Port | E810-U15, E810-U15H, E810-U15HF, E810-U15HFS | RS485 / RS232 / RS422 / TTL (5-in-1 multi-interface) | FTDI (FT232H Series) | 12 Mbps (High Speed) | 1.5KV to 3KV Dual Isolation, TVS protection, EMC Class 3 | Industrial DIN-Rail Flame-retardant Case |
| Standard 1-Port | E810-U15C | RS485 / RS232 / RS422 / TTL (5-in-1 multi-interface) | CH340 Series | 2 Mbps | Non-Isolated, TVS surge protection, EMC Class 3 | Industrial DIN-Rail Case |
| Multi-Port 2-Way Expansion | E810-U21, E810-U21C, E810-U21S, E810-U21CS | 2-Port independent RS485 | CH342 Series | 3 Mbps | Optional 500V galvanic isolation, TVS protection | Industrial DIN-Rail Case (Compact) |
| Multi-Port 4-Way Expansion | E810-U41, E810-U41C, E810-U41S, E810-U41CS | 4-Port independent RS485 | CH344Q / High-Speed MCU | 6 Mbps | Optional multi-channel isolation, TVS protection, EMC Class 3 | DIN-Rail Case with Quick Connect Terminals |
| Ultra-Compact Portable | E810-U15M, E810-RS-U01 | RS485 / TTL / RS232 (Depends on model) | FT232H / CH340 | 1 Mbps to 12 Mbps | ESD electrostatic protection, Three-proof coating | Dongle Pen-drive Shell, USB-A Interface |
Practical Application Scenarios
1. SCADA and Industrial Control Cabinet Integration
In factory automation, central supervisory control and data acquisition (SCADA) computers must monitor diverse field hardware including PLCs, variable frequency drives (VFDs), and HMI touch panels. Deploying the multi-port E810-U41CS or E810-U21CS allows a single industrial PC to map 2 or 4 completely separate physical Modbus RTU loops. The galvanic isolation blocks ground-loop currents originating from massive high-voltage motor control gear, protecting valuable computing equipment.
2. Renewable Photovoltaic (PV) Plant Data Collection
Solar inverters, meteorological stations, and dual-axis tracking sensors are distributed across massive solar fields, creating extensive RS485 bus runs. These outdoor lines are subject to lighting-induced transient surges. By incorporating the 3KV-isolated E810-U15H, energy management systems are insulated from severe surge events. The triple-conformal coating (anti-fungal, anti-humidity, and anti-salt spray) prevents board degradation inside highly exposed outdoor electrical combiners.
3. Smart Building Management Systems (BMS) and HVAC Automation
Modern intelligent structures utilize BACnet or Modbus protocol topologies over RS485 to supervise multi-zone central air conditioners, energy meters, and automatic door systems. Snapping the DIN-Rail compatible E810-U15C or E810-U21CS onto standard cabinets provides a robust link. The built-in TVS transient suppression and auto-transceiver switching eliminate packet conflicts on multi-device branches, facilitating smooth, continuous environmental control.
4. Precision Laboratory Diagnostics and Embedded Electronics Testing
Hardware engineers regularly debug prototype devices operating on 3.3V/5V TTL levels, RS232 terminals, or RS485 industrial interfaces. The ultra-versatile 5-in-1 E810-U15H or the compact E810-U15M replaces multiple diagnostic dongles. Engineers can switch seamlessly between standard serial formats to monitor UART debug prints from embedded microcontrollers (such as STM32, ESP32, or legacy 8051 architectures) directly on standard development environments.
FAQ Section
1. How does optical/galvanic isolation in the E810 series protect industrial host systems?
When serial lines span long physical distances in industrial complexes, the ground potentials at different nodes often vary significantly. This difference creates ground loops, allowing heavy common-mode noise or high-voltage fault currents to travel back along the signal lines and damage the host USB port. Isolated models (such as E810-U15H and E810-U21CS) utilize internal optocouplers to isolate the electric connection completely, transmitting data using light and protecting host electronics up to 3KV transients.
2. What is the benefit of the "Three-Proof" conformal coating on the E810 series?
The E810 converters feature a high-quality conformal coating (Three-proof varnish) applied directly to the internal PCB assembly. This layer offers exceptional resistance against humidity (moisture condensation), fungal accumulation, and salt-mist corrosion. This ensures long-term operational consistency and prevents circuit bridging in heavy coastal industries, smart agricultural greenhouses, and high-relative-humidity processing plants.
3. Do I need external drivers, and which operating systems are supported?
The E810 series features native, driver-free compatibility across modern operating systems. For FTDI-based variants (like E810-U15H and E810-U15M) and CH340/CH344-based units (like E810-U15C, E810-U41CS, and E810-RS-U01), drivers are pre-integrated into Windows 10/11, macOS, and mainstream Linux distributions. The device instantly enumerates as a Virtual COM Port (VCP) upon connection, requiring no manual software configuration.
4. How many slave devices can be connected to a single RS485 loop with these converters?
High-performance models in the E810 series (such as E810-U15H/E810-U15) are integrated with highly robust transceivers capable of driving up to 128 slave nodes (e.g., smart energy meters, pressure transmitters, or actuators) on a single RS485 multi-drop line. For systems with large node numbers, a matching 120-Ohm terminal resistor should be added to the furthest node to prevent signal reflection.
