Best quality 8 port usb gsm modem& 8 channel gsm modem for sms with free software

2G/3G/4G LTE Industry Modem

Frequency bands.

  3G MODEM.

     1.     HDM1003GW. WCDMA 850/1900 MHz or 900/2100MHz

     2.     HDM1003GE.  EVDO 800 MHz

  2G MODEM.

      1.HDM1002GG. GSM/GPRS,850/900/1800/1900MHz

      2.HDM1002GC. CDMA 1X,800MHz

Specifications.

3G MODEM.

1. HDM1003GW. data rate, DL,14.4Mbps ,UL:5.76Mbps

2.  HDM1003GE. data rate, DL,3.1Mbps ,UL:1.8Mbps 

 2G MODEM.

       1. HDM1002GG. GSM/GPRS,DL 85.6Kbps, UL,85.6Kbps

       2. HDM1002GC. CDMA 1X,DL 153.6Kbps, UL,153.6Kbps

Interfaces.

• +5~+30V.  connector for power supply connection

• RS232 or RS485. Plug-in terminal connector.

• SMA antenna connector .

• LED. Network status indicator, Power supply status indicator.

• USB. USB power supply and data communication port. (3G/4G LTE only)

• SIM/UIM. SIM/UIM card connector

Temperature.

Operating Temperature Range. -30℃~+75℃

Storage Temperature Range. -40℃~+85℃

Physical parameters.

Aluminum alloy shell

Dimension less than. 57 * 100 * 25 mm

Weight less than: 120 g 

Highlight.

               With watchdog funtion.Keep on online continuously.