SIM800A Kit Wireless Extension Module GSM GPRS STM32 Board Antenna

SIM800A module \ SMS \ boards \ GSM \ GPRS \ STM32 \ super SIM900A \ A6

UNV-SIM800A-V3.9.2 Introduction Development Board

• Power Requirements: 5V-18VPower supply, the current required 1.5A or more;
• TTL level serial port is compatible with 3.3V and 5V microcontrollers. May communicate directly with the real 51 / STM32 / MP430 SCM like;
• When debugging a computer with initial use CP2102 USB-TTL module to the power module and the communication;
• When using the MCU control module, and also through USB – 232 monitoring module for the return instruction data easy to find a great problem, especially for a small microcontroller with 51 partners.
• Standby around 30MA, you may be disposed about the sleep state 10MA low power consumption.
• Support SMS, GPRS data transmission, multimedia transmission, DTMF, HTTP, FTP, PPP dial functions.
• At the same time containing all the way to the hardware reset pin. When the module there is a problem, use this pin is reset to resolve.
• Development board supports 2G / 3G / 4G or mobile Unicom phone card.

This module advantages:

• Serial circuit: using magnetic beads and TVS protection device to protect the board so that the board will not hurt the surge, high voltage.
• SIM card circuit: increase SMF05C chip electrostatic discharge.
• Antenna circuit: guaranteed short and straight, so as to ensure that the signal strength.
• PCB show: silk mark each interface, convenient secondary development, full compliance SIM900A hardware design manual design.
• All the way 5-18V power supply Interface: We did a protection, even reversed, it will not burn board.
• All the way to TTL interface: Supports 3.3V and 5V single-chip microcontroller. That kind of support 51 5V microcontroller and STM32 microcontroller.
• Two antenna interface: SMA antenna interface, IPX MINI antenna interface (default not welded).
• 232 all the way to level interface: You can module that is connected to the computer through a raised 232 — USB serial cable directly. It can also be USB – TTL connected to the computer, based on individual parts circumstances. Do not need to spend money on accessories this is the other sellers and is the biggest difference.