2. SIM800C OverviewSIM800C is a quad-band GSM/GPRS module that works on frequencies GSM850MHz, EGSM900MHz,DCS1800MHz and PCS1900MHz. SIM800C features GPRS multi-slot class10/class12 (optional) and supportsthe GPRS coding schemes CS-1, CS-2, CS-3 and CS-4.With a tiny configuration of 17.6*15.7*2.3mm, SIM800C can meet almost all the space requirements incustomers’ applications, such as smart phone, PDA and other mobile devices.SIM800C is a SMT package with 42 pads, and provides all hardware interfaces between the module andcustomers’ boards. One 3 lines serial port and one full modem serial port; One USB, the USB interface can debug, download software; One audio channel which include a microphone input and a speaker output; Programmable general purpose input and output; One SIM card interface; Support Bluetooth (need software support).
