SIM900A SIM 900A V4.0 Kit Wireless Extension Module GSMGPRS Board Antenna Tested Worldwide soldering 1* Instruction Book

1* Instruction Book

Designed for learning electronics

Wokring Voltage(VCC): DC 5±0

functionality includes enhanced signal processing

SIM900A SIM 900A V4.0 Kit Wireless Extension Module GSMGPRS Board Antenna Tested Worldwide soldering 1* Instruction BookThe SIM card circuit to increase the SMF05C ESD chip. Antenna circuit: guarantee short and straight, so as to ensure the signal strength. PCB display screen printing mark: each interface, convenient development two times, the SIM900 A hardware is completely follow the design when the design manual. Two power supply interface: VCC5, 5V DC above 1A. Computer 5V power supply can be early computer USB. DC long data circuit over larger recommended 5V1A.