EBYTE WiFi Modules: Industrial Serial-to-WiFi Solutions for IoT
Blog 2026-05-23
EBYTE WiFi Modules: Industrial Serial-to-WiFi Solutions for IoT
Key Overview
Who this is for: Industrial automation engineers, IoT system integrators, and sensor network builders requiring reliable serial-to-WiFi connectivity at affordable prices.
Core problem: Legacy industrial equipment needs wireless connectivity without major redesign. EBYTE’s modules provide easy serial-to-WiFi conversion.
Key: EBYTE is the leading provider of cost-effective serial-to-WiFi modules for industrial applications. Their ESR series offers seamless integration with RS232/RS485 devices.
EBYTE Company Overview
EBYTE (Shenzhen EBYTE Technology Co., Ltd.) is a leading provider of industrial wireless communication modules based in Shenzhen, China. Founded in 2012, the company has become a major player in the IoT connectivity space, especially for industrial applications.
EBYTE’s core focus is on making wireless connectivity simple and affordable for industrial equipment. They specialize in serial-to-WiFi converters that allow legacy RS232/RS485 devices to connect to WiFi networks without requiring major hardware changes.
What sets EBYTE apart is their commitment to backward compatibility and ease of use. Their modules support AT commands and come with comprehensive documentation, making them popular among system integrators and hobbyists alike.
Serial-to-WiFi Module Product Line
EBYTE WiFi Module Comparison Table
| Model | WiFi Standard | Interfaces | Power Consumption | Form Factor | Target Application |
|---|---|---|---|---|---|
| ESR-12 | WiFi 4 (802.11b/g/n) | RS232/RS485 | Low | DIP | Industrial control |
| ESR-22 | WiFi 4 | RS232/RS485/Ethernet | Medium | DIP | IoT gateways |
| ESR-32 | WiFi 5 (802.11ac) | RS232/RS485 | Medium | SMT | High-speed data |
| ESR-42 | WiFi 6 (802.11ax) | RS232/RS485/TTL | Medium | SMT | Enterprise IoT |
| ESR-W02 | WiFi 4 | TTL/UART | Ultra-low | Small SMT | Battery sensors |
Chipset Platforms
- Realtek RTL8720DN: WiFi 4/BLE combo, low power
- Realtek RTL8821CU: WiFi 5, high performance
- Realtek RTL8852BU: WiFi 6, latest standard
- ESP32: WiFi/BLE combo with MCU
Form Factors
- DIP Package: Through-hole for easy prototyping
- SMT Package: Surface mount for production
- Module with Antenna: Integrated antenna option
- Breakout Boards: Pre-assembled for quick testing
Industrial Application Scenarios
Industrial Control Systems
EBYTE modules enable wireless connectivity for PLCs and industrial controllers:
- Remote monitoring of production lines
- Wireless PLC programming
- Machine-to-machine communication
- Real-time data acquisition
Smart Agriculture
For agricultural IoT applications:
- Soil moisture monitoring
- Environmental sensor networks
- Smart irrigation control
- Greenhouse automation
Building Automation
For smart building and HVAC systems:
- Energy management systems
- HVAC control and monitoring
- Access control systems
- Lighting control
Key Features & Protocol Support
Supported Protocols
- TCP/IP: Full TCP/IP stack support
- UDP: Datagram protocol support
- HTTP/HTTPS: Web server and client
- MQTT: IoT messaging protocol
- CoAP: Constrained application protocol
- Modbus: Industrial communication protocol
Advanced Features
- AT Command Support: Easy configuration and control
- Auto-connect: Automatic reconnection on loss
- DHCP/Static IP: Flexible network configuration
- Multiple SSID: Support for multiple networks
- Encryption: WPA/WPA2/WPA3 support
- Remote Configuration: Over-the-air updates
Industrial-Grade Reliability
- Wide Temperature Range: -40°C to +85°C
- ESD Protection: ±15kV HBM protection
- EMI Shielding: Built-in RF shielding
- Long Lifespan: 100,000+ hour MTBF
Selection Guide & Alternatives
When to Choose EBYTE
- Connecting legacy RS232/RS485 devices to WiFi
- Building industrial IoT sensor networks
- Need AT command support for easy integration
- Require industrial-grade temperature range
When to Consider Alternatives
- Sunsea AIoT: For higher volume consumer applications
- Realtek: For chip-level integration
- Espressif: For MCU-integrated solutions
- Quectel: For industrial-grade reliability
For complete WiFi module manufacturer comparison, see our pillar guide:
Frequently Asked Questions
Q: Does EBYTE support RS485 communication?
Yes, most EBYTE WiFi modules support both RS232 and RS485 interfaces. The ESR-12 and ESR-22 models feature selectable serial interfaces, making them ideal for connecting to legacy industrial equipment.
Q: Can EBYTE modules be used with Arduino/Raspberry Pi?
Yes, EBYTE modules are popular among hobbyists and can be easily integrated with Arduino, Raspberry Pi, and other development boards. They typically communicate via UART/TTL interfaces.
Q: What is the range of EBYTE WiFi modules?
Range depends on the antenna and environment. With an external antenna, EBYTE modules can achieve ranges of 100-300 meters in open areas, and 30-50 meters indoors.
Q: Does EBYTE provide technical documentation?
Yes, EBYTE provides comprehensive documentation including datasheets, AT command manuals, application notes, and reference designs. They also have active technical support forums.
Q: What is the typical price range for EBYTE modules?
EBYTE modules are very competitively priced, ranging from $5-$15 per unit depending on the model and quantity. Volume discounts are available for large orders.
