1 Set New SIM800L GSM GPRS M Aa & Ar S Quad Band £0.99 thenationalherald.com
GSM GPRS Module SIM800L Module IPX Antenna Interface 4 Frequency 5V USB to TTL Serial Port
A9G GSM/GPRS+GPS Breakout Board | Makerfabs
Amazon.com: Teyleten Robot SIM800C USB GSM GPRS Wireless Module Quad-Band, 850/900/1800/1900MHz, CH340T USB Chip Support 2G 3G 4G SIM Card USB Communication SMS Data Transmission with Antenna (SIM800C is New) : Electronics
GSM/GPRS/GPS Shield (B), Arduino Shield Based on SIM808