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SIM900A Wireless GSM GPRS Module

1,357.00 (Including GST)

1,150.00 ( + 207.00 GST)

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 IPX mini 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.

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SKU: RDNA-120.222 Category:

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Description

Specifications:

  • 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 IPX mini 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 support3.3 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.

Pin Description:

  • GND – GNDSIMR SIM900A RXD, TTL level,
  • can not be directly connected to the 232 levelSIMT SIM900A TXD, TTL level,
  • can not be directly connected to the 232 levelRST – SIM900A reset,
  • active lowVCC_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 4pcsSIM900A serial port output terminal

 

  • Size:49mm x 47mm
  • Net Weight:28gWeight: 38g

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