Enhance your communication projects with this versatile GSM/GPRS Module, designed to support 2G, 3G, and 4G mobile phone cards for broad network compatibility. Equipped with a standard antenna, it delivers strong and stable signal reception comparable to high-quality spring antennas. The onboard high-efficiency DC-DC circuit stabilizes input power from 5V to 18V down to a reliable 3.8V, ensuring consistent performance across various power sources. Key Features: · **Wide Voltage Input with Stable Output:** Supports 5V-18V power supply with onboard DC-DC conversion to a steady 3.8V, accommodating diverse power environments while maintaining stable operation. · **Standard Antenna for Excellent Signal:** Includes a high-quality antenna providing robust signal strength suitable for reliable wireless communication. · **Comprehensive Audio Interface:** Features earphone and microphone interfaces alongside 2.54mm pitch pin headers for easy external connection and audio integration. · **Multi-Network Compatibility:** Supports multiple mobile phone card models, compatible with 2G networks, and accepts standard SIM cards from 2G, 3G, and 4G devices. · **Static Electricity Protection:** Integrated SIM card static electricity protection safeguards the IC and SIM card from electrostatic damage, enhancing module durability. · **Onboard TTL to RS232 Interface:** Includes a 9-pin RS232 interface for debugging and communication, also providing power output to the board for simplified connectivity. · **TTL Level Serial Port Compatibility:** Supports direct connection with 3.3V and 5V microcontroller systems without the need for level conversion, compatible with popular microcontrollers such as 51, STM32, and MSP430. · **Low Power Consumption:** Features a standby current of approximately 30mA and a sleep mode reducing power usage to about 10mA, ideal for energy-efficient applications. · **Rich Communication Protocol Support:** Enables SMS, GPRS data transmission, MMS, DTMF, HTTP, FTP, PPP dialing, and more, offering versatile communication options. · **Hardware Reset Pin:** Provides a reset pin to easily reboot the module when necessary, improving system stability and troubleshooting. Specifications: · Input Voltage: 5V-18V (with onboard DC-DC converter to 3.8V) · Standby Current: ~30mA · Sleep Current: ~10mA · Serial Interface: TTL level, compatible with 3.3V/5V microcontrollers · Network Support: 2G/3G/4G mobile phone cards (2G network support only) · Audio Interface: Earphone and microphone ports · Debug Interface: 9-pin RS232 for debugging and power supply Package Includes: · 1 x GSM/GPRS Communication Module This GSM/GPRS Module is an ideal choice for developers and hobbyists seeking a reliable, low-power communication solution with extensive network and protocol support. Its robust design, comprehensive interfaces, and easy integration with microcontroller systems make it perfect for IoT projects, remote monitoring, and wireless data transmission applications.