GSM GPRS Modem

Product Details:

There are two onboard power supply interfaces VCC5 5V power supply, VCC4 interface, 3.5--4.5V power supply, optional power-on self-start (default) and control start.

On-board SMA (default) and IPXmini antenna interface, SIM900A interface is reserved for reset.

The module size is 49*50, all of which are brand new and original.

The computer can supply power to the early computer to debug the USB module. When the recommended current is above 1A, the amount of data is very large. Dozens of MA data in standby can be set to provide sleep, 10MA low-power sleep. Support 2, mobile phone 3, 4G card.

Serial port circuit: support 3.3V microcontroller. TTL serial port support

3.3 and 5V microcontrollers.

SIM card circuit adds SMF05C ESD chip.

Antenna circuit: keep it short and straight to ensure signal strength.

PCB display silk screen mark: each interface is convenient for secondary development, SIM900/A hardware is completely designed according to the design manual.

Two power supply interfaces: VCC5, 5V DC above 1A. Computer 5V power supply can be used in early computer USB. If the DC long data circuit is too large, 5V1A is recommended. VCC4, 3.5--4.5V power supply, same as above, suitable for lithium battery.

Control pins for all leads.

A TTL level, compatible with 3.3V and 5V.

Two antenna ports, default SMA straight head, IPXmini antenna connector.

A voice interface method, a microphone interface method.

Description of each pin control interface:

ground - ground

SIMR SIM900A RXD, TTL level, not directly connected to 232 level

SIMT SIM900A TXD, TTL level, not directly connected to 232 level

RST - SIM900A reset, active low

VCC_MCU When SIM900A module communicates with 5V TTL level, this pin is connected to DC 5V; when SIM900A communicates with 3.3V TTL level, 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 curved female port)

SIM card circuit (flip the SIM card slot)

4*3.5 Fixture hole 4pcs

SIM900A serial port output terminal

Specification:

Color as shown

Dimensions: 49mm x 47mm

Net weight: 28g

Weight: 38g

Package Included:

1 x SIM900A Kit

1 x Power Cord

1 x Antenna

Additional Information:

• Item Code: OMP-G039
• Delivery Time: 1 to 2 Days

Product Details:

• Quad-Band 850/900/1800/1900 MHz - could work on GSM networks in all countries around the world, work with Uno Mega; only works for 2G networks
• Embedded TCP / UDP stack - allows you to upload data to a Web server | RTC supported | selectable serial port | Jac speakers and headphones
• Note: This is a new version (64M version), SMS support MMS: Multimedia message and Short Message Service - so it is possible to send small amounts of data over the network (ASCII or raw hexadecimal)
• The shield allows you to get SMS, MMS, GPRS and audio via UART by sending AT commands (GSM 07.07, 07.05 and SIMCOM enhanced to commands). The shield also has the 12 GPIOs, 2 PWMs and an ADC of the SIM900 module (They are all 2V8 logic) present on board.
• Application: M2M (Machine 2 Machine) Applications.Remote control of appliances.Remote Weather Station or Wireless Sensor Network.Vehicle tracking system with a GPS module.Good to learn GSM / GPRS mobile phone development, control development of remote equipment, wireless meter reading, smart appliances, ultra long distance control, etc.

Product Details:

• Mini GSM / GPRS breakout board is based on SIM800L module, supports quad-band GSM/GPRS network, available for GPRS and SMS message data remote transmission.
• The board features compact size and low current consumption. With power saving technique, the current consumption is as low as 1mA in sleep mode.
• It communicates with microcontroller via UART port, supports command including 3GPP TS 27.007, 27.005 and SIMCOM enhanced AT Commands.
• AT command interface with "auto baud" detection.
• TTL serial port for serial port, you can link directly to the micro controller.

Additional Information:

• Item Code: OMP-G015
• Production Capacity: NA
• Delivery Time: 1 to 2 days
• Packaging Details: BOX