SIM900A/SIM900 MINI V4.0 Development Wireless Data Transmition Module GSM GPRS Board


QuantityDiscountDiscounted Price
5 - 9 5% £9.41
10 + 10% £8.91

SIM900A Development Wireless Data Transmition Module GSM GPRS Board
SIM900A/SIM900 MINI V4.0 Development Wireless Data Transmition Module GSM GPRS Board £9.90£12.90
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SIM900 MINI V4.0 Features:

  • Diverse Power Supply Options: Comes with two on-board power supply interfaces – VCC5, which utilises a 5V power supply, and VCC4 that uses a 3.5-4.5V power supply. Both can either self-start upon powering or be controlled to start.
  • Antenna Flexibility: Equipped with both SMA (default) and IPXmini antenna interfaces. The SIM900A interface has a reserved reset.
  • Superior Design: Compact in size at 49*50, the module is constructed using all-new and original devices.
  • Optimal Power Handling: While the computer can provide initial USB module power, it’s recommended to have a current of more than 1A for substantial data transmission. When dormant, the module consumes a mere 10MA of power.
  • Broad Compatibility: Supports 2, 3, and 4G mobile phone cards. Its serial port is designed to be compatible with both 3.3V and 5V single-chip microcomputers.
  • Enhanced Safety: The SIM card circuit is fortified with the SMF05C ESD chip, ensuring prolonged durability.
  • Clear Markings: Every interface on the PCB displays screen printing marks for easy identification and development.
  • Versatile Antenna Interfaces: Defaulted to an SMA straight head with an IPXmini antenna connector.
  • Comprehensive Control Interface: All control pins are led out, complete with a detailed description for each, making it user-friendly.

Onboard Assets of SIM900:

  • Protected serial port circuit
  • SMA bend female port for antenna interface circuit
  • Flip SIM slot for SIM card circuit
  • Four 3.5 fixture holes
  • Output terminal for SIM900A serial port


  • Dimensions: 49mm x 47mm
  • Net Weight: 28g
  • Gross Weight: 38g

Important Safety Note: Please be extra cautious as the connector’s red and black wires are REVERSED. It’s vital to inspect the supplied power cord, as it might be wired backward.

Package Contains:

  • 1 x SIM900 V3.9 kit
  • 1 x Power Cable
  • 1 x Antenna

The estimated delivery time:

  • Standard (Free for orders over 25£ or 1.90£ Service) – Estimated 1-2 working days
  • Tracked 24H – Estimated 1-2 working days with tracking
  • Next Day Special Guarantee- Next Working Day before 1 p.m. (if ordered before 3 p.m.)

Items are normally dispatched within 24 hours (the same day if ordered before 3 p.m., excluding weekends) in 99.9% of cases.

When you place an order, and it is successful, you will receive an email confirmation for the received order. When the order is dispatched, you will receive an email confirming that your order is complete. Please note that if the order is placed with the standard service, tracking will only show when a delivery attempt is made or when the order is delivered.