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SIM900A GSM/GPRS Module V4.0


SIM900A GSM/GPRS Module V4.0. SIM900A Wireless Data Transmission Module Kit in Bangladesh

  •  Compatible with Raspberry Pi and Arduino 
  • 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 a 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. CityTechBD 

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 4 pieces 
  • SIM900A serial port output terminal 
  • Size: 49mm x 47mm 
  • Net Weight: 28g
  • Weight: 38g   CityTechBD 

Package Includes:

  • 1 x SIM900A V4.0 kit 
  • 1x Power Cable 
  • 1x Antenna   CityTechBD 


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