General features GSM Quad-Band 850 / 900 / 1800 / 1900 MHz (MC55iT) GSM Dual-Band 900 / 1800 MHz (MC52iT) 3GPP Release 98 GPRS multi-slot Class 10/8 Compliant to GSM phase 2/2+ Output power: Class 4 (2W) for GSM850 Class 4 (2W) for GSM900 Class 1 (1W) for GSM1800 Class 1 (1W) for GSM1900 SIM Application Toolkit Control via AT commands (Hayes, 3GPP TS 27.007 and 27.005) TCP / IP stack access via AT commands Internet Services TCP server/ client, UDP, ICMP, DNS, HTTP, FTP, SMTP, POP3 Supply voltage range: 8 - 30 V Operating temperature: -30 °C to +75 °C Dimensions: 65 x 74 x 33 mm Weight: 110 g WEEE RoHS and EuP compliant