Ever since 1983 the telephone alert specialist

We have been supplying our telephone alarms and modems for monitoring critical processes and installations since 1983. We are proud of these products and their long lifespan. As a guideline, you can assume that the reliability decreases more quickly with alarms older than 10 years. Depending on the conditions of use, this may even be earlier. For information about lifespan, repair or service, please refer to the service page.

Do you still have one of the products below in use and are you looking for an alternative to these products? Then view the product page for all relevant information or contact our sales department for replacement advice. We are happy to help you further so that you are ready for the future!

ISDN type alarm dialer for guarding critical processes.
Versatile alarm / modem combination with voice, SMS and pager messages.
Severa Steady Connect
GPRS modem / SMS alarm dialler for very stable connection and alarm via SMS.
Severa Modem
Universal SMS-alarmdialer with build in emergency supply.
Severa GPRS Webmeter
GPRS datalogger with storage in the cloud and web-visualisation.