... ,DNS, HTTP, FTP, SMTP, POP3 Supply voltage range: 8 – 30 V Operating temperature: -30 °C to +75 °C Dimensions: 65 x ... Class B CSD data transmission up to 14.4 kbps, V.110,non-transparent USSD support SMS text and PDU mode ... Western jack) Mini-SIM card reader, 1.8 V and 3.0 V V.24 / V.28 RS-232 interface(D-sub 9-pole female ...