Detailed Product Description Brand: etross or OEM Model: etross-188B Frequencies: 850/900/1800/1900Mhz GSM FWT MAIN FUNCTIONS &FEATURES 1 Simple to install and easy to maintain 2 Steady module (Sim340) & reliable design ensures good performance 3 Provide optimized circuit directly connecting the exchange device for extensions 4 Compatible to most telephones, PBX (for office use) & VoIP gateways (for call termination) 5 Connect to Alarm systems to realize wireless alarm (for security use) 6 Strong signals with high gain antenna 7 Attractive Plastic casing 8 SIM card support (3V, 5V) 9 DTMF CLIP (Caller ID display) 10 Provide reversal polarity signal, 12Khz, 16Khz (selectable) for metering 11 No noise &Clear voice 12 Suitable for wide voltage range &Low power consumption 13 Suitable for all kinds of weather & environment 14 RJ-11 ports (two extensions /phone and line (optional) ) 15 Locking PIN/ Network (optional) SPECIFICATIONS 1.Air Interface Standard GSM 900/1800 MHz Phase 2+ 2.Frequency Ranges Transmission Reception GSM 850 GSM 900 890~915MHz 935~960MHz GSM 1800 1710~1785MHz 1805~1880MHz GSM 1900 3.Channel Space 200KHz 4.User line, bell signal In line with GB/T15279 5.Max Power 0. 25W/0.5W 6.Consume Immobility less than 25MA,Transmission less than 400MA 7.Sensitivity -105db 8.Dialtone frequency 450Mhz (Standard) 9.Surrounding Temperature -10 degree ~ +40 degree Relative humidity:45% ~ 90%( Without frost) 10.Atmosphere Pressure 86 ~ 106Pka 11.Environment Noise <60db 12.Antenna amplifying 3.5db(omni directional) 12db(certain direction /chosen direction) 13.AC Power Input:(AC100-230V,50/60Hz) Output: (12V 1A) Switching type /Transformer type Ac-adapter( optional) 14.Connector of Power American/European/British type (Selectable). 15.Dimensions (L*W*H) Average 185*135*22(mm) 16.Weight FWT 400g, full set with ac-adapter &antenna &box 850g 17.Color black 18.Connection Mode RJ-11 phone sockets; 19.Antenna Connection SMA Antenna Connection.