The EBYTE E103-W20 (7688) is a compact, high-performance serial-to-WiFi module designed for IoT and embedded applications. Built on the reliable MediaTek MT7688AN/MT7628AN chipset, this module delivers stable wireless connectivity with low power consumption, making it ideal for smart devices, industrial automation, and cloud-based solutions.

Supporting IEEE 802.11 b/g/n standards, it offers strong transmission power up to 24dBm and a communication range of up to 200 meters. With OpenWrt support and flexible secondary development options, developers can easily customize and integrate it into a wide range of applications.

Key Features

• Chipset: MT7688AN / MT7628AN
• WiFi Standards: IEEE 802.11 b/g/n
• Transmission Power: 20–24dBm
• Processor Speed: 580MHz (MIPS24KEc)
• Communication Range: Up to 200 meters
• Low Power Design: Optimized for IoT applications
• Operating System Support: OpenWrt for custom development
• Compact Size: ~34.1 × 18.7 × 2.7 mm
• Lightweight: Approx. 3.5g

Electrical Specifications

• Operating Voltage: 3.3V ±0.2V (Do not exceed 3.5V)
• Communication Level: 3.3V
• No-load Current: 180 ±50 mA
• Supply Current Requirement: ≥1000 mA
• Operating Temperature: -20°C to +55°C
• Storage Temperature: -40°C to +85°C
• Humidity: 10–95% RH (non-condensing)

Hardware Specifications

• Flash Memory: 32MB (Optional: 16MB / 8MB)
• RAM: DDR2 128MB (Optional: 256MB / 64MB / 32MB)
• Antenna Interface: IPEX (1T2R or 2T2R options)
• Wireless Speed: Up to 150Mbps / 300Mbps PHY rate

Interfaces

• Ethernet: 5 × 10/100 Mbps (Default: 1 WAN + 4 LAN)
• UART: Up to 3 ports (2 supported by firmware, transparent transmission supported)
• GPIO: 8+ configurable pins
• Other Interfaces (hardware available, firmware dependent):
  SDIO, SPI, I2C, I2S, PWM

Applications

• Smart home devices
• Industrial IoT systems
• Wireless data transmission
• Cloud-connected devices
• Embedded networking solutions