Sim900A Wireless Data Transfer Module / SMS / Development Board Kit
- 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 silk screen, which is convenient for secondary development, and the design completely follows the SIM900A hardware design manual.
- All the way 5V power supply interface: We have made protection, even if the connection is reversed, it will not burn the board. The computer USB power supply is sufficient for the initial debugging of the computer; long-term data transmission requires a large amount of electricity, and we recommend a DC above 1A.
- One TTL interface: support 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 interfaces: SMA antenna interface, IPX MINI antenna interface (no welding). One 232 level interface: that means you can directly connect the module to the computer through a 232---USB serial line. It can also be connected to a computer via USB-TTL, depending on personal accessories.
Model: SIM900A
Power requirements: 5V
size:48 x 50mm
Material:abs
colour:Black+blue
Package Contents:
1 x sim900a module
1 x GSM module antenna
1 x Module power cord
Only the above package content, other products are not included.
Note: Light reflection 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 +/- 1-3cm.
What's in the box
1 x sim900a module
1 x GSM module antenna
1 x Module power cord
