The SIM800C Module is a versatile communication device supporting Quad-band operation across 850/900/1800/1900MHz. It excels in transmitting Voice, SMS, and data with minimal power consumption, making it ideal for various applications.

SIM800C Features:

• Frequency Bands:

  • Quad-band 850/900/1800/1900MHz

• Transmitting Power:

  • Class 4 (2 W @ 850/900MHz)
  • Class 1 (1 W @ 1800/1900MHz)

• GPRS Connectivity:

  • GPRS multi-slot class 12/10
  • GPRS mobile station class B
  • GPRS data: Class 12, max. 85.6 kbps (downlink/uplink)
  • Coding schemes CS 1, 2, 3, 4
  • PBCch support
  • PPP-stack

• Temperature Range:

  • -40°C ~ 85°C

• Software Features:

  • Embedded TCP/UDP protocol
  • Bluetooth 3.0 (optional)
  • SMS: MT, MO, CB, Text, and PDU mode

• Dimension:

  • 62mm x 52.5mm

Module Features:

• Communication Interface:

  • RS232 port and LVTTL port
  • Support for AT commands
  • RTS/CTS hardware flow control
  • Support for 1200bps ~ 460800bps
  • Debug port

• Audio Interface:

  • 3.5mm phone jack for microphone and earphone

• Antenna Interface:

  • SMA port

• Operating Voltage:

  • DC5 ~ 24V (2A)

Working with Arduino Uno:

1. Tutorial available for Arduino GSM.
2. Easy connection to Arduino Uno: pin2 to STXD; pin3 to SRXD, and GND to GND. 

Jumper Settings: (A). Pin PKEY, VBAT

• SHORT = GSM auto-on when power is supplied (default)
• OPEN = GSM turn-on when long-press on PKEY

(B). SRXD<=>RTXD and STXD<=>RRXD

• SHORT = Communicate through RS232 Port (default)
• OPEN = Communicate with MCU/Arduino through pins SRXD, STXD

Additional Information:

• The module is mainly controlled by AT commands.
• Connection instructions: 5V, GND, TXD, RDX pins connect to VCC_IN, GND, RDX, TXD pins of SIM800C.
• Indicator LED behavior signifies module status.