Description

SIM800 GSM GPRS module STM32 SIM900A Upgrade board GPS module

A basic function

SIM800 module is a GSM/GPRS module. The development board supports China Unicom mobile 2g/3g/4g card.

1.DC6-24v wide voltage power supply, can be used to facilitate the use of your system power supply. Board high performance DC-DC power circuit, coupled with TVS protection, so that the stability of the system is greatly improved

2. Support 3.3 V / 5 V TTL level control, convenient and all kinds of commonly used microcontroller.

The modules are separately listed in TX/RX/GND, use and convenience

3. With standard serial interface, easy to use PC control or debugging

4 with headphones and Mike interface, can be convenient to test the GSM voice call function

5 with SIM card ESD protection chip, protection of electrostatic SIM card plug when the

6 all available SIM800 pins are out to facilitate you to develop a variety of SIM800 applications

7. With RTC back-up battery

8. Have NET_STA light, convenient to watch the current SIM800 state.

9 board size 83mm*54mm