Gsm/gprs Modules Sim900/sim900a

Our offered range of GSM/GPRS Modules SIM900/SIM900A is available with following specifications :- General features of GSM/GPRS Modules: SIM900: Quad-Band 850/ 900/ 1800/ 1900 MHz SIM900A: Dual-Band 900/ 1800 MHz GPRS multi-slot class 10/8 GPRS mobile station class B Compliant to GSM phase 2/2+ a Class 4 (2 W @850/ 900 MHz) a Class 1 (1 W @ 1800/1900MHz) Dimensions: 24* 24 * 3 mm Weight: 7g Control via AT commands (GSM 07.07 ,07.05 and SIMCOM enhanced AT Commands) SIM application toolkit Supply voltage range 3.4 ... 4.5 V Low power consumption Normal Operation temperature: -30 A C to +80 A C Specifications for Fax Group 3, class 1 Specifications for Data GPRS class 10: max. 85.6 kbps (downlink) PBCCH support Coding schemes CS 1, 2, 3, 4 CSD up to 14.4 kbps USSD Non transparent mode PPP-stack Specifications for SMS via GSM/GPRS Point to point MO and MT SMS cell broadcast Text and PDU mode Drivers MUX Driver Specifications for Voice Tricodec a Half rate (HR) a Full rate (FR) a Enhanced Full rate (EFR) Hands-free operation i Echo suppressioni Interface Interface to external SIM 3V/ 1.8V analog audio interface RTC backup SPI interface Two Serial interfaces Antenna pad I2C GPIO PWM ADC Compatibility : AT cellular command interface