Modems > 2G Modems

2G/GSM/GPRS Modems

The functionality within the ZEST, ZETA, ZOOM, ZULU and ZEUS modems is significantly more advanced than the majority of other modem manufacturers today, delivering excellent technical performance and great value for money.  With the widest range from the low cost ZEST through to the advanced ZULU modem with ARM Cortex M4 for your application, Sequoia can offer an optimised product to suit most applications.


Some of the applications where these products are used:

  • Vending / Arcade machines
  • Toll Systems
  • Fuel Management
  • Passenger Information Systems
  • Traffic Management Systems
  • HVAC
  • Parking Meters
  • Lighting control
  • Flood warning systems
  • Access control
  • Remote monitoring and control
  • Wind farms and energy systems



The Zest range are low cost entry-level 2G or 3G industrial modems designed to quickly and easily connect your equipment via the cellular network with little effort. The ZEST-N-GPRS (EU) is a dual band GPRS modem providing EU coverage, for the EMEA and APAC regions, if a higher data rate is required then the ZEST-N-UMTS (EU) is ideally suited. Both variants of ZEST are available with VLINK-232 software, providing a virtual wireless RS232 link.


With GPRS and 3G versions, Zeta provides the optimised solution for applications requiring cellular connectivity with the addition of GPIO for remote monitoring.  Zeta has a wide input voltage range of 5-60V DC which makes it ideal for vehicle based applications. The integrated TCP/IP stack greatly simplifies network services such as connecting to the internet, sending emails, connecting to an FTP server and opening data socket connections through simple and easy to use AT commands.  The UMTS version includes an option for GPS.

Zoom Embedded Socket Modems

The Zoom series of embedded socket modems offer TTL/RS232/USB connectivity and GPIO for 2G/3G network connectivity.  Designed to be easily integrated with your own equipment and with low overall cost.  The ZOOM-G variant includes GPS.

Zulu Advanced Modem with Arm Cortex M4

The ZULU 3G modems have an ARM Cortex M4 32bit processor as standard,independent of the wireless module, for customers to develop their software on. The ZULU has both USB and RS232 serial ports with 10 GPIO lines as standard.  With a host of data interfaces including I2C, CAN, 1-Wire and ADC, ZULU is the ultimate platform for developing 3G / 4G products.


Modems Part Number Guide

QuikConnect modems part numbering guide


V-Link232 Software

 V-link232 offers the additional benefit of an intelligent GPRS cable replacement solution, ideal for wirelessly connecting remote devices. With remote access of devices being handled over the GPRS network, embedded applications can also be directly connected via the RS232 port to a central controller.

V-link232 can be used in multiple remote access applications and is also completely configurable in the field via SMS commands, or locally using our configuration tool via RS232 serial.

V-link232 has been designed to allow a wireless connection between remote devices and can be configured in 2 ways - either allowing remote devices to automatically connect to a central server, or allowing a central server to connect and query the remote devices.

Key Features
  • Comprehensive range of industrial modems
  • 2G GPRS, 3G UMTS and 4G LTE
  • Packaged, DIN rail mountable and socket modems
  • Cable replacement and system on modem versions
  • RS232 / USB / Ethernet
  • GPIO options
  • ADC, CAN, I2C, 1-Wire Interfaces
  • Rugged industrial modems
  • Class leading range
  • V-Link232 Software Option
  • Evaluation Kits

    2G Modem Evaluation Kits

    Evaluation Kits
  • Starter Kits

  • Zest

    2G Modem - Zest

  • Zeta

    2G Modem - Zeta

  • Zoom

    ZOOM 2G Modem

  • Zulu

    2G Modem - Zulu