Welcome to our store! 1、Phone Calls: This fixed wireless terminal allows you to make local calls, domestic calls, and international calls by connecting to a regular landline desktop phone and installing a GSM SIM card. 2、Easy Installation: This GSM ID caller uses GSM mobile phone SIM card, which is easy to install and use, with strong signal receiving ability and stable performance. 3、Wide Application: This GSM desktop caller is suitable for remote areas, mountains, telemarketing, public shop, office, factory, movable places such as ships, trains, and long distance buses. 4、Antipodal Signal: This GSM fixed wireless terminal has antipodal signal that can be connected to the ticket register or computer ticket register. 5、Powerful Signal Reception: This GSM caller has powerful signal reception and easy setting, and it can be used in the same way as an ordinary landline phone. Item Type: Fixed Wireless Terminal Material: ABS Installation: Use SIM card for GSM mobile phone without investment in landline. Easy installation Voice Services: Support international and domestic, local, fixed/mobile voice services Operation: Do not change the original dialing habits, and the operation habits of ordinary landline phones are the same Antipodal Signal: With antipodal signal, can be connected to the ticket price register or use a computer price register. Watchdog: Built in Watchdog Circuit on Duty. Automatically detects the running status of the device and automatically restarts when a fault occurs No Error: DTMF transmission mode, caller ID error is 0 Communication Voltage: Standard communication voltage, which can be connected to the telephone exchange IP Function: Automatic IP function, multiple groups of IP settings Calling Party: The calling party's IP prefix for fixed long distance calls, such as 17951, 17911 and 193, etc. Authority Setting: Authority setting for incoming calls for international, national, and local calls Code Preset: Preset local area code, local number segment, and prohibited number or number segment Encryption Settings: Such as PIN code, PUK encryption machine card lock function LED Lights: Display signal, standby, working mode and other information Caller ID: Supported Interface Type: RJ11 Supported Networks: Different countries use different frequencies, EC25 EU for Europe, EC25 AF for USA, EC25 AU for Australia. Please confirm the frequency in your area before purchasing EC25 EU: TDD: B38/B40/B41 WCDMA: B1/B8 GSM: B3/B8 EC25 AF: LTE FDD: B2/B4/B5/B12/B13/B14/B66/B71 WCDMA: B2/B4/B5 EC25 AU: LTE FDD: B1/B2/B3/B4/B5/B7/B8/B28 LTE TDD: B40 WCDMA: B1/B2/B5/B8 GSM: B2/B3/B5/B8 Visual Function: None Scope of Application: Wireless access, security Number Storage Function: Supported Recording Function: None Signal Sensitivity: <-104DBM Transmission Power: <2W Antenna Power: >1.5db Power Supply: 5V 1A Equipment Power: <5W RJ11 Standby Voltage: DC 40 to 48V RJ11 Working Voltage: DC 8 to 12V RJ11 Dial Tone Frequency: 450HZ RJ11 Supply Current: 20MA to 40mA RJ11 Reverse Polarity: Supported RJ11 Call: DTMF Working Environment Temperature: Minus 20℃ to Plus 50℃ Operating Environment Relative Humidity: 10 to 90 % Product Size: Approx. 16.2 x 10 x 3.1cm / 6.4 x 3.9 x 1.2in ( manual measurement, slight error may exist ) Package List: 1 x Fixed Wireless Terminal 1 x Power Plug 1 x Antenna 1 x Wireless Receiver 1 x Phone Cable 1 x User Manual