SIM800A Module SMS Development Board GSM GPRS STM32 Super SIM900A

Detail SIM800A Module SMS Development Board GSM GPRS STM32 Super SIM900A

Please use the CP2102 USB-TTL module to power and communicate the module.

All open source full set of information links: http://pan•baidu•com/s/1i5Nknh7

UNV-SIM800A-V3.9.2 development board introduction

Power supply : 5V-18V power supply, current needs to provide 1.5A or more;
The TTL level serial port is compatible with 3.3V and 5V microcontrollers. Really can communicate directly with 51/STM32/MP430 and other microcontrollers;
When using the computer for initial debugging, please use the CP2102 USB-TTL module to power and communicate the module.
When using the MCU control module, you can also use the USB-232 monitoring module to return the data to the command, which is very convenient to find the problem, especially suitable for the 51 MCU partners.
Standby at around 30MA, you can set the sleep state to low power consumption around 10MA.
Support SMS, GPRS data transmission, send MMS, DTMF, HTTP, FTP, PPP dialing and other functions.
At the same time, the hardware contains a reset pin. This pin reset can be used when there is a problem with the module.
The development board supports 2G/3G/4G Unicom or mobile phone cards.

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