Product Features
USB to GSM is a quad-band GSM/GPRS module with stable performance, compact appearance and high cost performance, which can meet the various needs of customers. Integrated USB to serial port chip, plug directly into the computer to debug. The SIM800C operates at GSM/GPRS850/900/1800/1900MHz and is used worldwide. It can transmit voice, SMS information and data information with low power consumption, and can be applied to various compact product design requirements.
 
Product Parameters

  • Onboard original SIM800C GSM/GPRS module

  • Onboard CH340T USB to serial port chip, easy to install and high compatibility

  • Self-elastic SIM card slot design for mobile or Unicom 2G/3G/4GMicro SIM and Nano cards

  • The module is powered on automatically to connect to the network, no need to press the button to control the boot, eliminating the troublesome boot process

  • Support SMS messaging, provide management software

  • Support GPRS data transmission under 2G network, can be applied to occasions such as mobile meter reading

  • Support Bluetooth data transmission, IEEE802.15 Bluetooth standard, 2.4GHz working frequency band

  • Support adaptive baud rate

  • With the work indicator, no network, no SIM card or SIM card is inserted, the L ED lamp flashes quickly in 1 second interval, and the normal access network flashes once every 3 seconds.

  • Board size: 27*50.7mm.

 
Interface Introduction

Schematic

SIM800C Chip


Main Characteristics
Quad-band 850/900/1800/1900MHz
GPRS multi-slot class 12/10
GPRS mobile station class B
Meet the GSM 2/2+ standard
Class 4 (2 W @850/900 MHz)
Class 1 (1 W @1800/1900MHz)
Controlled by AT commands (3GPP TS 27.007, 27.005 and SIMCOM Enhanced AT Command Set)
Low power consumption
SIM application kit
Supply voltage range: 3.4 ~ 4.4V
Operating temperature range: -40 to +85 °C
Voice
Tricodec
Half rate (HR)
full rate (FR)
Enhanced Full Rate (EFR)
AMR
Half rate (HR)
full rate (FR)
Support echo suppression algorithm
Data Transmission
GPRS class 12: Maximum 85.6 kbps (downstream rate)
Support PBCCH
Coding schemes CS 1, 2, 3, 4
PPP-stack/ USSD
Interface
42 SMT pins
One way analog audio interface
Support RTC
USB/ Serial/ interface
SIM card interface (3V/ 1.8V)
GPIO /ADC
GSM antenna pad
BT antenna pad
SMS
Point-to-point MO and MT / SMS broadcast/Text and PDU mode
Compatibility
AT cellular command interface
Software Features
0710 MUX protocol
Embedded TCP/UDP protocol
FTP/HTTP
MMS
e-mail
DTMF detection
Interference detection
recording
SSL



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