SIM900A V4.0 Kit Wireless Extension Module GSM GPRS Board Antenna Tested 2015 New Professional Promotion

SIM900A V4.0 Kit Wireless Extension Module GSM GPRS Board Antenna Test

This Joysticks product : SIM900A V4.0 Kit Wireless Extension Module GSM GPRS Board Antenna Tested 2015 New Professional Promotion post on : 2016-04-08 Joysticks

Discount : 15% OFF

Min. Qty. 1/lot.

Evaluate Score : 4.7/5.0

Promotion End : 2016-05-25

Buy Now $10.54

--- Last Updated: 2016-09-16

--- Product prices and availability are accurate as of the date/time indicated and are subject to change.

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--- Date/Timezone : Asia/Shanghai

Details and more pictures of SIM900A V4.0 Kit Wireless Extension Module GSM GPRS Board Antenna Tested 2015 New Professional Promotion

Features:

The onboard two set power supply interface VCC5 5V power supply, VCC4 interface, 3.5--4.5V power supply, optional power on self starting (default) and control start.
The onboard SMA (default) and IPXmini antenna interface, SIM900A interface reserved reset.
The size of the module is 49*50, all the new and original device.
The computer can give early computer debugging USB module power supply, a very large amount of data under the condition of the recommended current more than 1A. Standby dozens of MA data can be set to provide dormancy, dormancy of 10MA low power. Support 2, mobile phone 3,4G card.
The serial port circuit: support for 3.3V single chip microcomputer. TTL serial port support
3.3 and 5V single chip microcomputer.
The SIM card circuit to increase the SMF05C ESD chip.
Antenna circuit: guarantee short and straight, so as to ensure the signal strength.
PCB display screen printing mark: each interface, convenient development two times, the SIM900/A hardware is completely follow the design when the design manual.
Two power supply interface: VCC5, 5V DC above 1A. Computer 5V power supply can be early computer USB. DC long data circuit over larger recommended 5V1A. VCC4, 3.5--4.5V power supply, ibid., suitable for lithium battery.
Control pin all leads.
A TTL level, compatible with 3.3V and 5V.
The two antenna interface, the default SMA straight head, connector for IPXmini antenna.
One way of speech interface, the way Mike interface.
The control interface of each pin description:
GND - GND
SIMR SIM900A RXD, TTL level, can not be directly connected to the 232 level
SIMT SIM900A TXD, TTL level, can not be directly connected to the 232 level
RST - SIM900A reset, active low
VCC_MCU when the SIM900A module and 5V TTL level communication, this pin is connected to DC 5V; when the level of communication of SIM900A and 3.3V TTL, this pin is connected to DC 3.3V.
VCC5----DC 5V input.
VCC4------DC3.5--4.5 input
Onboard Resources:
Serial port circuit(with protection)
Antenna interface circuit(SMA bend female port)
SIM card circuit(flip SIM slot)
4*3.5 fixture hole 4pcs
SIM900A serial port output terminal
Specifications:
Size:49mm x 47mm
Net Weight:28g
Weight: 38g
Package Included:
1 x SIM900A V4.0 kit
1x Power Cable
1x Antenna

image for SIM900A V4.0 Kit Wireless Extension Module GSM GPRS Board Antenna Test

image for SIM900A V4.0 Kit Wireless Extension Module GSM GPRS Board Antenna Test

image for SIM900A V4.0 Kit Wireless Extension Module GSM GPRS Board Antenna Test

image for SIM900A V4.0 Kit Wireless Extension Module GSM GPRS Board Antenna Test

image for SIM900A V4.0 Kit Wireless Extension Module GSM GPRS Board Antenna Test

The advantage of this module:
Serial interface circuit: the TVS and magnetic beads protection device to protect the board, the board will not surge, high voltage damage.
It increases the SIM card circuit SMF05C chip electrostatic discharge.
Short and straight antenna circuit: the warranty, so as to ensure the signal strength.
PCB show: each interface screen printing mark, convenient for secondary development, the design fully follow SIM900A hardware design manual.
All the 5 v power supply interface: we have done to protect, not even meet the burning board.Initial debugging computer USB power supply;Long time data transmission power consumption is bigger we recommend more than 1 a dc.
All the TTL interface: support 3.3 V microcontroller and 5 V microcontroller.That is support 5 v microcontroller and STM32 microcontroller 51 class.
Two way antenna interface: SMA antenna interface, IPX MINI antenna interface (not welded) by default.
All the way to the 232 level interface: that means you can via a 232 - USB serial port module is connected to the computer directly to the rise.Also can be connected to computer USB - TTL, according to personal accessories.Don't need to spend more money to buy accessories which is and is the biggest difference between other sellers.



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