SIM900A USB Modem / GSM modem / GPRS Modem / Self Powered
You can buy online from https://goo.gl/kUPdsZ
“Sim900a GSM/GPRS USB Modem, Featuring an industry-standard interface, the SIM900A delivers GSM/GPRS 900/1800MHz performance for SMS, Data, and Fax in a small form factor and with low power consumption, With Aluminum enclosure to minimize noise. 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 ”
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GSM
Source by Gray Logix