Dual band GSM 900/1800MHz (GSM 850/1900MHz)
Industrial GSM module embedded
LCD display, Caller ID, Support DTMF and FSK
Built in li-battery (optional)
Trunk port of PBX access (extention port of PBX access optional)
Redial, call divert, call waiting, call conference support
Hand-Free support
Call records,
PSTN access, PC SMS, PC fax (optional)
GPRS (optional)
Polarity reverse and 12/16K pulse for billing (optional)
G3 analogue Fax (optional)
Technical Specification
Air Interface Standard
GSM 900/1800 Phase 2+
GSM850/1900
Transmit Power
GSM 850/900: 2 watts
GSM 1800/1900: 1 watt

Environment
Operating temperature range: -10° C to +55° C
Storage temperature range: -20° C to + 60° C
Humidity: 5% to 95%
AC-to-DC Switching Power Supply
Voltage: 100 - 300 V AC
Frequency: 50/60 Hz