gsm modem dual sim card- Qida GU81 multi recharge software voice calling usb dongle

gsm modem dual sim card- Qida GU81 multi recharge software voice calling usb dongle 

1/8/16 ports SIM card slots (Customized 32/64 port)

2G GSM Frequency: 850/900/1800/1900MHz

3G WCDMA HSDPA EVDO

4G TDD-LTE FDD-LTE

SMS sending: 600/800/1000/1200 SMS per hour by one port

Connection with the computer through RS232 interface (PCI card) can be integrated with USB interface

Each port with separate power switch

Each individual module can be discharged

Bulk sms/mms sending, voice ads, data consumption and IMEI changeable etc

Open AT command Internet Services TCP server/client, UDP, ICMP, DNS, HTTP, FTP, SMTP, POP3

1) Large shopping malls, supermarkets

2) Professional market, large wholesalers

3) Large hotels, large-scale entertainment

4) Large agencies

5) Transport, logistics industry

6) Large enterprises and institutions

7) Large hospitals, large bookstore

8) Newspaper, television and radio stations

9) Oil Company (or other chain business model)

10) Government agencies or large township

1) Remote Data Monitor and Control;

2) CCTV, security surveillance;

3) Water, gas and oil flow metering and schedule;

4) AMR (automatic meter reading);

5) Power station monitoring and control;

6) Remote POS (point of sale) terminals, ATM,

7) Traffic signals monitor and control, Traffic info guidance;

8) Oil field, weather forecast, environmental protection, street lamp monitoring and control

9) Early Warning of Mountain Torrent;

10) Fleet management;

11) Power distribution network supervision;

12) Central heating system supervision;

13) Weather station data transmission;

14) Hydrologic data acquisition;

15) Vending machine;

16) Telemetry, SCADA;

17) Vehicle logistics and diagnostics controlling;

18) Parking meter and Taxi Monitor;

19) Telecom equipment supervision (Mobile base station, microwave or optical relay station)

1. We can offer secondary development for own developed module, customize AT command and functions as needed.

2. We integrate multi chipsets inside data cable, which works with both Serial port card and USB port, anti signal interference, electromagnetic shielding.

3. Own developed module, own developed software, own manufacture lead to our competitive price, professional service, fast response and stable performance of modems.

4. We can sell only modules without metal case, offering flexible packing choices, which makes your customs clearance more convenient and reduce your cost.

5. Our module function including IMEI change, SMS, MMS, Voice, data, works with both SMS caster and Otomax. 

1. Customize appearance, such as size, fixed way.

2. Offer the control of secondary development as needed.

3. Customize AT command and functions.

4. Customize LOGO and packing.

5. Customize module needed.

6. Customize telecom standard needed.

 After-sale service