SMA connectors, short for SubMiniature Version A, are semi-precision, subminiature devices that provide repeatable electrical performance from DC to 12.4 GHz with flexible cable.
SIM800C is a complete Quad-band GSM/GPRS solution in a SMT type, which can be embedded in the customer applications.
SIM800C supports Quad-band 850/900/1800/1900MHz, it can transmit Voice, SMS and data information with low power consumption.
SIM800H is a quad-band GSM/GPRS module, that works on frequencies GSM850MHz, EGSM900MHz, DCS1800MHz and PCS1900MHz.SIM800H features GPRS multi-slot class 12/class 10(optional) and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4.