ZETA Product Resources

The ZETA Modem is designed to deliver reliable cellular connectivity for IoT applications, ensuring seamless communication across networks. To help you get the best performance from your device, this page provides essential support resources, including user manuals, firmware updates, application notes and FAQ’s. Whether you’re setting up your modem, updating firmware, or resolving connectivity issues, you’ll find the information you need to keep your ZETA Modem running smoothly.

Downloads & Firmware Updates:

Stay current with the latest ZETA modem firmware and software tools. Regular updates ensure improved functionality, enhanced performance, and new features.

Document Downloads:

Learn how to use your ZETA modem. Browse our document section for user manuals and datasheets.

Troubleshooting & FAQs

Are you having an issue with your ZETA? Browse our Application notes section for solutions to common problems, Our FAQs also provide quick answers to frequently asked questions.

Technical Support

If you need further assistance, our support team is ready to help. Contact us for expert guidance on setup, advanced features, or diagnosing network-related issues.

Product Assistance

Support Desk +44 1189 769 000
Click here to submit a support request

The Siretta range of industrial low power modem solutions are a family of cellular enabled modems which have been designed to an industrial specification to allow an easy connection for remote devices over the internet. The family of products supports a standard set of features including low power operation with a wide range and robust power supply, RS232 and USB serial connectivity and extended temperature spec as standard.

Each member of the modem family supports an embedded TCP/IP stack for simple network connectivity and an enhanced set of AT commands to support many advanced features such as FTP, email, SMS, CSD, direct data socket connections and over the air software updates. As a result the units are designed to be used as a direct replacement for existing equipment and can be easily setup with the correct commands to operate out-of-the-box.

Modem Features

AT Command Interface for Complete Control
Low power solutions for sensitive power budget applications
Optional automatic reboot timer
Embedded TCP/IP software stack
Pre-configured eSIM enabled solution
Remote Firmware Over The Air (FOTA) updates
Embedded C Programming Environment for Intelligent Applications
2G / GPRS for low cost legacy connectivity
3G / UMTS for intermediate connectivity
4G / LTE Cat 1 for medium performance, medium speed internet access
4G / LTE Cat 4 for high performance, high speed internet access
LTE Cat M1 / NB1 for next generation LTE IoT connectivity

ZETA Startup Guide

Follow this guide to get up and running with your ZETA simply and quickly. This guide will describe how to connect, power and setup the initial communication to enable device development and provides a basic overview of supported functionality.

Basic Modem Functions

Follow this application note to get started with basic modem connectivity. This application note covers how to use many of the basic functions of the modem and allows you to evaluate many of the powerful embedded functions.

Modem Application Notes

Siretta ZETA Industrial Modems have been designed to interface existing equipment with cellular connectivity. The application notes listed here show how to use the modem in many different applications and describes powerful functions to enhance existing systems.

The SirettaSPARK Tool is an automated device management application developed by Siretta to simplify the process of keeping your devices up to date with the latest software and firmware. Software updates provide new features, performance improvements and bug fixes to applications developed by Siretta and enhance your products overall capabilities. Firmware updates provide improvements to the devices core operation, add performance improvements and enhance device network interaction.

Both of these elements are important to keep your device running in optimal condition and the SirettaSPARK tool helps to make this process simple and easy.

The SirettaSPARK Tool automates software and firmware updates for all of your Siretta devices and offers the following benefits:

Simplified device management
Ensures devices have the latest firmware and software installed
Increased performance and operating improvements
Apply the latest bug fixes

In addition the SirettaSPARK Tool incorporates advanced features which offer the following:

Debugging tools saved locally to a log file
Debugging tools saved remotely to Siretta’s servers
Device configuration tools for application management
Simple network connectivity logging tools

The SirettaSPARK integrated tools provide automated device updates and allow the Siretta Engineering team to understand and debug any underlying issues with your application integration remotely.

NOTE: If SirettaSPARK does not find your connected equipment you may be running an outdated version of software or you may have a problem with your devices setup.
Please contact Siretta support for further assistance.

Pin	Name	Description	Direction
1	DCD	Output to indicate modem is ready	Out
2	RXD	Output transmit line	Out
3	TXD	Input receive line	In
4	DTR	Input to control DTE ready condition	In
5	GND	RS232 Ground	In
6	DSR	Output to indicate modem is ready	Out
7	RTS	Input to control hardware flow control	In
8	CTS	Output to control hardware flow control	Out
9	RI	Output indicating incoming call	Out

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ZETA Product ResourcesUltra low power, high performance industrial cellular modems

Downloads & Firmware Updates:

Document Downloads:

Troubleshooting & FAQs

Technical Support

Product Assistance

ZETA Startup Guide

Basic Modem Functions

Modem Application Notes

Can I use my mobile to control Siretta modem?

Does Siretta provide a SIM card for their modems?

Does Siretta offer a global modem solution?

What are the basic specifications for the Siretta Modems?

How many Pins does a Siretta modem use on its RS232 interface?

What is the SIM card size to use with Siretta modem’s?

What interfaces are supported on a Siretta Modem?

What is the operating voltage for Siretta modem?

Is it possible to send SMS messages using a Siretta modem?

What accessories come with a Siretta modem?

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