16 port q2303a gsm modem at command usb for rs232 port

Key Features

Just like 8 single-channel equipments work at the same time

insert 8 SIM cards(big or small)

connection with the computer through a data line be   integrated with Serial 8

Each channel with separate power switch

Each individual module be demolished

industrial chassis, elegant shell

GSM frequency: 900/1800 MHZ

Wireless access to internet

Comply with GSM phase2 standard

Dual-band/Quad-band(optional)  RS-232/USB interface(optional)

Basic Features

Asynchronous, transparent or non-transparent, to a maximum 14400 bits / s

Optional data,voice function

send and receive SMS in bulk

Dial Plan

Automatic baud rate: from 2400 to 19200 bits / s

Enhanced Features

GPRS compatible

WAP compatible

SMA Antenna Interface

SIM Card Outlet

Power connector

AT command control ( GSM 07.07 and 07.05)

Comfort noise generation (CNG)

Voice activity detection (VAD)

Auto provisioning (requires auto provisioning server)

On line firmware upgrade

Multi-language support

Application

Large shopping malls, supermarkets

Professional market, large wholesalers

Large hotels, large-scale entertainment

Large agencies

Transport, logistics industry

Large enterprises, and institutions

Large hospitals, large bookstore

Newspaper, television and radio stations

Oil Company ( other chain business model)

Government agencies or large township

large company

Large Supermarket

SMS service company

5 -24 VDC power supply

Class 4 ( 2W @ 900 MHz) Class 5 ( 1W @ 1800 MHz)

Meet the ETSI GSM 2 + standards

Physical and Environmental

Operating Temperature: -20 ° C - + 55 ° C

Storage temperature: -25 ° C - + 70 ° C

Warranty: one year