Features: Providing CDMA800mhz connectivity Internal backup battery Simple to install/easy to maintain Allow PIN code entering and reciprocal phone-card lock Provide optimized circuit directly connecting the exchange device for extensions LCD with back screen Polarity reversal signal for metering 3.5dBi gain antenna Compatible to PABX Suitable for call termination of ISP Incoming call reminder, time display Specifications: Air interface standard: CDMA800 MHz Phase 2+ Frequency ranges: CDMA800MHz Channel space: 200KHz Sensitivity: -104dB Peak power consumption: 2W Operating environment requirements: Temperature: 0癈 - +40癈 Relative humidity: 45% - 90% Connectors: SMA antenna connector (TNC optional) Atmospheric pressure: 86~106Pka Power consumption: static<=25 mA, emission<=500 mA Antenna: Gain: 3.5dB (all directional) 12 dB(Certain/selection) Power supply: AC220V?0% 50Hz