Sim900A GSM Module

Feature

• Single supply voltage: 3.4V – 4.5V
• Power saving mode: Typical power consumption in SLEEP mode is 1.5mA
• Frequency bands:SIM900A Dual-band: EGSM900, DCS1800. The SIM900A can search the two frequency bands automatically. The frequency bands also can be set by AT command.
• GSM class: Small MS
• GPRS connectivity:GPRS multi-slot class 10 (default) , GPRS multi-slot class 8 (option)
• Transmitting power: Class 4 (2W) at EGSM 900, Class 1 (1W) at DCS 1800
• Operating Temperature: -30ºC to +80ºC
• Storage Temperature: -5ºC to +90ºC
• DATA GPRS: download transfer max is 85.6KBps, Upload transfer max 42.8KBps
• Supports CSD, USSD, SMS, FAX
• Supports MIC and Audio Input
• Speaker Input
• Features keypad interface
• Features display interface
• Features Real Time Clock
• Supports UART interface
• Supports single SIM card
• Firmware upgrade by debug port
• Communication by using AT commands