SIM900A GSM / GPRS ATK-SIM900A Module Development Board - Deep Blue

SIM900A GSM / GPRS ATK-SIM900A Module Development Board - Deep Blue

Overview:

Working frequency: 900/1800Mhz;
SIM900A module (development board) onboard resources as follows:
GSM module: SIM900A;
1 x RTC backup battery;
1 x microphone interface;
1 x headphone jack;
1 x RS232 interface selection;
1 x RS232 serial port;
1 x lithium battery Interface;
1 x power input interface;
1 x power indicator (blue);
1 x power switch;
1 x clamshell SIM card;
1 x SMA antenna connector and antenna supporting small pepper;
1 x power on / off button;
1 x network status indicator (red);
SIM900A modules were used for all IO port pin leads, easy to use;
ATK-SIM900A module (development board) using industry-standard design, features include:
Onboard RS232 serial port (supports hardware flow control), convenient and PC / IPC and other devices;
Onboard 3.5mm headphone and microphone stand, to facilitate voice communication development;
Leads all the IO port SIM900A modules, and communications section IO port compatibility design made for easy connection 3.3V / 5V SCM system;
Onboard efficient synchronous buck circuit, the conversion efficiency up to 90%, support for wide voltage range (5~24V), ideal for industrial applications;
Onboard power anti-reverse protection, TVS power protection and SIM ESD protection, the protection function;
Board RTC backup battery (XH414H-IV01E), without worrying about the power-down problem;
Onboard peppers antenna, can effectively improve the signal reception;
Adoption of international A-level PCB material, immersion gold processing technology, stable and reliable;
With a new component machining, copper plated pin, durable;
Humanized design, each interface has silkscreen labels, use a glance; connector location and reasonable arrangements designed to facilitate smoothly.
PCB size is 80 x 58mm, and with mounting holes, small and exquisite;