Key Features

• Quectel M66 GSM/GPRS module
• Quad-band GSM: 850 / 900 / 1800 / 1900 MHz
• GPRS Class 12 data communication
• Supports SMS messaging
• Supports voice communication
• UART interface for AT commands and data communication
• SIM card interface
• External GSM antenna connector
• Network status indication
• Power and module status indicators
• Compact development-board design
• Suitable for integration with Arduino, STM32, ATmega, ESP32 and other MCUs
• Low-power operation suitable for battery-powered applications
• Supports TCP/UDP, FTP and other embedded Internet protocols.

GSM/GPRS Communication

The M66 provides reliable 2G GSM/GPRS connectivity for applications that need cellular communication without Wi-Fi or wired Internet. It supports GPRS data rates up to 85.6 kbps and includes built-in Internet protocols such as TCP/UDP, FTP and PPP.