900/1800MHZ GSM fixed wireless phone with SMS func

Brand: Etross or OEM brand Model no.: Etross 6188 Product name:GSM Fixed Wireless Phone FWPFeatures: 1) Applies to E-GSM 900/1800Mhz mobile communication network 2) Easy to install and easy to maintain 3) Clear voice and no noise 4) Caller ID (CLI display) 5) Stores 10 received / 10 dialed / 10 missed call records 6) Authentic signal, battery volume, time and date display 6) Built-in back-up Li-ion battery: 48 hours standby / 3 hours talk 7) English LCD and case 8) 12 groups chord ringers for incoming call 9) Hands free function 10) Metering function for payphone purpose 11) Speak number in English function (option) 12) Strong signal by high gain antenna (3.5dB - 5dB) 13) IP pre-setting for save call cost 14) Like ordinary hardwire-line telephone operation method Specifications 1) Air interface standard: GSM 900 / 1,800MHz phase 2+ 2) Frequency ranges a) GSM 900 I) Transmission: 890 - 915MHz ii) Reception: 935 - 960MHz b) GSM 1800 I) Transmission: 1,710 - 1,785MHz ii) Reception: 1,805 - 1,880MHz 3) Channel space: 200KHz 4) Max power: 0.25W / 0.5W 5) Consumptiona) Immobility: less than 25mAb) Transmission: less than 400mA 6) Sensitivity: -105dB 7) Surrounding temperature: -10 degree - +40 degree 8) Relative humidity: 45% - 90% (without frost) 9) Atmosphere pressure: 86 - 106Kpa 10) Environment noise: <60dB 11) Antenna amplifying: 3.5dB (Omni directional), 12dB (certain direction/ chosen direction) 12) AC power: DC 5V 1A 13) Connector of power: US or European type( selectable) 14) Dimensions (L x W x H) (average): 230 x 180 x 60mm 15) Weight: FWP: 400g; Full set with AC adapter, antenna and box: 550g 16) Colors: White 17) Antenna connection: SMA antenna connection