GSM MODEM HUAWEI QUADBAND LCC; No. of Channels:2Channels; Protocol:GSM GPRS; Supply Voltage Max:4.2V; Frequency RF:1.9GHz; Module Interface:Serial UART; Kit Features:CDMA Band Analogue Audio Voice Corder Data & SMS Features; Product Range:-; SVHC:No SVHC (15-Jun-2015); Supply Voltage Min:3.2V