1. Easy Connection: This fixed wireless terminal works on a GSM network. The terminal is connected to a regular wired desktop phone and a standard SIM card to make local, national, and international calls. 2. Wide Application: This GSM desktop phone is suitable for remote areas, mountains, telemarketing, public shops, offices, factories, movable places such as ships, trains, and long-distance buses. 3. Simple Installation: This GSM dialer uses GSM mobile phone SIM card, which is easy to install and use with stable performance. 4. Antipodal Signal: This GSM fixed wireless terminal has an antipodal signal that can be connected to a cash register or computerized cash register. 5. Powerful Signal Reception: This GSM phone has powerful signal reception and easy setup, and it can be used in the same way as a regular landline phone. Item Type: Fixed Wireless Terminal Material: ABS Installation: Use Gsm mobile phone SIM card without ground wire investment. Easy installation Voice Services: Supports international and domestic, local, fixed/mobile voice services Operation: Do not change the original dialing habits, and the operating habits of ordinary telephone lines are the same Antipodal Signal: With Antipodal Signal, it can be connected to the cash register or use a computerized cash register. Watchdog: Built-in watchdog circuit in service. Automatically detects the operating status of the device and restarts automatically when a fault occurs No Error: DTMF transmission mode, number presentation error is 0 Communication Voltage: Standard communication voltage, which can be connected to PABX IP Function: Automatic IP function, multiple groups of IP settings Calling Party: Calling party 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 forbidden number or number segment Encryption Settings: Such as PIN, PUK encryption machine card lock function LED Lights: Displays signal, standby mode, working mode, and other information Caller ID: Supported Interface Type: RJ11 Supported Network: GSM: 850/900/1800/1900MHz Visual Function: None Scope of Application: Wireless access, security Number Storage Function: Supported Recording Function: None Network Parameters GSM: GSM:1900/1800/900/850M 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 Calling: DTMF Working Environment Temperature: Minus 20℃ to 50℃ Working Environment Relative Humidity: 10 to 90% Product Size: Approx. 12 x 8.5cm / 4.7 x 3.3in (Manual measurement, slight error may occur)