Featuring an industry-standard interface, the SIM900A delivers GSM/GPRS 900/1800MHz performance for voice, SMS, Data, and Fax in a small form factor and with low power consumption. With Board size of 75x54mm, and interfacing ports of Serial UART DB9 Female, TTL, Mic, Speaker, I2C, ADC, PWM (Floating Points). with Power Button (press and hold for 3 seconds to power on the module), Reset button and with in built regulated power supply, can operate from 9v to 12v AC/DC. has an option for SMA Antenna.
General features
•Dual-Band 900/ 1800 MHz
•GPRS multi-slot class 10/8
•GPRS mobile station class B
•Compliant to GSM phase 2/2+
– Class 4 (2 W @900 MHz)
– Class 1 (1 W @ 1800MHz)
•SAIC (Single Antenna Interference Cancellation) support
•Control via AT commands (GSM 07.07 ,07.05 and SIMCOM enhanced AT Commands)
•SIM application toolkit
•internal Supply voltage range : 3.2 ... 4.8V
•External Supply voltage range : 9 ... 12V DC
•Low power consumption: 1.0mA(sleep mode&BS-PA- MFRMS=9 )
•Operation temperature: -40°C to +85 °C
Specifications for Fax
•Group 3, class 1
Specifications for GPRS Data •GPRS class 10: max. 85.6 kbps (downlink)
•PBCCH support
•Coding schemes CS 1, 2, 3, 4
•PPP-stack
Specifications for CSD Data
•CSD up to 14.4 kbps
•USSD
•Non transparent mode
Specifications for SMS via GSM/GPRS
•Point to point MO and MT
•SMS cell broadcast
•Text and PDU mode
Software features
•0710 MUX protocol
•embedded TCP/UDP protocol
•FTP/HTTP
Specifications for Voice
•Tricodec
– Half rate (HR)
– Full rate (FR)
– Enhanced Full rate (EFR)
•AMR
– Half rate (HR)
– Full rate (FR)
•Hands-free operation
(Echo suppression)
Interfaces
•Serial and TTL (3.3v)
•Simcard holder
•Analog audio interface
•SPI interface
•TTL interface
•Antenna SMA Connector
•I2C
•GPIO
•PWM
•ADC
•Reset Button
•Power Button
•LED for Power
•LED for Network
•LED for Ring
Compatibility
•AT cellular command interface
