Feature:1. Strong Receiving Ability: Our wireless terminals are easy to operate, have strong signal receiving ability, clear call settings, long service life and stable performance.2. Function: Use GSM network to run. Using this terminal to connect with ordinary wired desk phone and standard SIM card, you can make local, domestic and international calls.3. Reverse Polarity Signal: Do not change the original dialing habits, the same as ordinary telephone landline operating habits, with reverse polarity signal, can be connected to the meter or use the computer meter.4. Easy to Install: No need to invest in ground wire line, use GSM mobile phone SIM card, easy to install, won't take too much time.5. Wide Application: Widely used in remote villages, mountainous areas, houses with weak signals, public telephone shops, offices, telephone sales, ships, trains and other mobile places.Specification:Item Type: GSM Fixed Wireless TerminalMaterial:ABSProduct Size: Length x Width Approx. 15.5 x 10cm / 6.1 x 3.9in (Manual Measurement, There Will be 0-1cm Error)SIM Card: No Need to Invest in Ground Wire Line, Use GSM Mobile Phone SIM Card. Easy to InstallSupport Business: Support International and Domestic, Local, Fixed, Mobile Voice ServicesOperating Habits: Do Not Change the Original Dialing Habits, the Same As Ordinary Telephone Landline Operating HabitsReverse Polarity Signal: with Reverse Polarity Signal, Can Be Connected to Meter or Use Computer MeterAutomatic Detection: Built in Watchdog Duty Circuit. Automatic Detection of Equipment Running Status, Automatic Restart in Case of FailureTransmission Mode: DTMF Transmission Mode, Caller Id 0 ErrorFunction: Fully Automatic Ip Function, Multiple Sets of Ip SettingsIp Prefix: the Calling Ip Prefix Automatically Inserted by Fixed Toll, Such As 17951, 17911, 193, Etc.Permission Setting: Various Permission Settings for the Called Party, Such As International, Domestic and Local CallsDefault: Default Local Area Code, Local Number Segment and Prohibited Number or Number SegmentEncryption Settings: Encryption Settings, Such As PIN Code, PUK Code Encryption Machine Card Lock FunctionLED Lights: LED Lights Display Information Such As Signal, Standby Status, Working Status, Etc.Caller ID: YesInterface Form: RJ11Network Support: GSM: 1900 1800 900 850MVisual Function: NoneScope of Application: Wireless Access, SecurityNumber Storage Function: YesRecording Function: NoneNetwork Parameters GSM: 1900 1800 900 850MSignal Sensitivity: < -104DBMTransmit Power: <2WAntenna Power: >1.5dbPower: 5V 1ADevice Power: <5WRJ11 Dial Audio Frequency: 450HZRJ11 Feed Current: 20MA to 40mARJ11 Reverse Polarity: SupportRJ11 Call System: DTMFWorking Environment Temperature: -20 to 50Relative Humidity of Working Environment: Humidity 10 to 90%.Package List:1 x Fixed Wireless Terminal Host1 x Supply Plug1 x Antenna Cable1 x Antenna Receiver1 x Telephone Line1 x User Manual