GSM Modem, Industrial Sim Card Modem with High Gain Replacable Antenna

Posted by Elinsevan Li on June 5th, 2019

E-Lins GSM modems mainly cover EDGE modem and GPRS modem. With USB port or serial RS232 / RS485 ports, the GSM modem provides mobile network data link for wireless M2M application. 

For single sim GSM GPRS modem, the main model is M300 and M400.

GPRS MODEM is a kind of Internet transmission terminal where users through GPRS network or GSM network to achieve remote wireless data transmission and interaction. Monitoring and information early warning and forecast is its main application.

Modem GPRS/CDMA is a physical access to the GPRS/CDMA packet network, which does not have an operating system itself. It must be attached to the computer.
Its function is similar to wired Modem and is usually used in combination with PC.

Industrial GPRS modem with small volume, curved aluminum shell, the standard I/O interface and can be directly connected to the serial port. It can achieve GSM send and receive text messages, voice calls, wireless data transmission, GPRS wireless internet access and other functions. It is suitable for GPS system, short message software, public wireless, wireless monitoring, wireless POS etc use. Among these, data transmission services and Internet access function are mostly used, so it is sometimes called wireless network card.

2G GSM Modem Hot Spot

Built-in 2G GSM GPRS EDGE industrial cellular modules, insert SIM/UIM card to work directly;

GPRS Industrial Monitoring ProgramGPRS is the abbreviation of General Packet Radio Service, It is a mobile data service available to GSM mobile phone users, and it belongs to the data transmission technology in the second generation mobile communication. GPRS can be regarded as the continuation of GSM. Differing from the previous continuous channel transmission, it is transported in the form of Packet. Therefore, the cost is calculated by its transmission data unit rather than the entire channel, which is theoretically cheaper. The transmission rate of GPRS can be increased to 56 or even 114Kbps

Mobile communication technology has grown from the first generation of analog communication systems to the second generation of digital communications systems, as well as the 3G, 4G, 5G after the rapid development. GPRS modem is widely used in the second generation mobile communication technology. However, the GSM system can only exchange data in the circuit domain, and the maximum transmission rate is 9.6kbit/s. It is difficult to meet the demand of data service. Thus, ETSI introduced GPRS.

The packet switched technology is an important data transmission technology in a computer network. In order to achieve the support from the traditional voice service to the new data service, GPRS has superimposed the network that supports the high-speed packet data on the basis of the original GSM network, providing the user with WAP browsing (browsing the Internet page), e-mail, etc. It promoted a leaping development of mobile data service and realized the perfect combination of mobile communication technology and data communication technology (especially Internet technology).