Bảng Mạch Phát Triển Sim800A Gsm Gprs Ule Cho Nano Sim / Hỗ Trợ 4g

Power supply requirements: 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. It can communicate directly with 51/STM32/MP430 and other single-chip computers;When debugging with a computer at the initial stage, please use the CP2102 USB-TTL ule to power the ule and communicate;
When using the single-chip microcomputer control ule, you can also monitor the return data of the instruction through the USB-232 monitoring ule, which greatly facilitates finding the problem,especially suitable for small partners who use 51 single-chip microcomputers.The standby e is around 30MA, and the sleep state can be set to around 10MA for low power consumption.
Support SMS, GPRS data transmission, sending MMS, DTMF, HTTP, FTP, PPP dialing and other functions.At the same time, the hardware contains a reset pin. When the ule has a problem, you can use this pin to reset it.The development board supports 2G/3G/4G Unicom or cards.
Advantages of this ule:Serial port circuit: TVS and magnetic bead protection devices are used to protect the board, so that the board will not be damaged by surges and high voltages.SIM card circuit: Add SMF05C electrostatic discharge chip.Antenna circuit: Keep it short and straight, so as to ensure the signal strength.

PCB display: Each interface is marked by silkscreen, which is convenient for secondary development, and the design completely follows the SIM900A hardware design manual.
All the way 5-18V power supply interface: We have made protection, even if the connection is reversed, it will not burn the board.
One TTL interface: supports 3.3V single-chip microcomputer and 5V single-chip microcomputer. In other words, it supports 51 types of 5V microcontrollers and STM32 microcontrollers.
Two antenna interColour:green
Material:PCB

Package Contents:
1x SIM800A development board
1x Dupont line
1x antenna

Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1