With Siedle: more than just modernization

Renovation is much more than just replacing outdated equipment. Renovation can tidy up, upgrade and expand. Renovation pays in a contemporary design, in security or simply in the future - with mobile door communication. And renovation is easy: with Siedle products.


An overview of modernisation with Siedle

Siedle IQ HTS HTA + App

Goodbye old. Hello app!

Simply replace the in-house telephone – and connect to the Siedle app. For systems from 1952 onwards. Siedle IQ connects existing systems to the future.

View more about Siedle IQ
Siedle Compact Video alte Klingel zu Sprechanlage

From doorbell to intercom

Greater convenience plus added security – with very little mounting or installation work: Usually, the wiring from an old doorbell is suitable for vision and surveillance as well as speech and door release.

More about retrofitting of doorbells
Siedle Haustelefone Austausch

In-house telephone replacement

Renovate your intercom indoors – without any new cabling, great effort or high costs. Simply replace your old in-house telephone with a new one – with an award-winning design and an array of design options. And you can enhance the system with the Siedle app.

More about retrofitting of in-house telephones
Siedle Classic Austausch der Türstationen und Briefkästen

Door station and letterbox replacement

Only replace what you really need to: The retrofit version of the Siedle Classic door station fits exactly on the flush-mount housing of even the oldest Siedle series [TL 111]; which means there’s no need for any work on the masonry. If you have an older Siedle letterbox [such as the TL 411 - series], then only the fronts are replaced with the Siedle Classic retrofit systems’, the built-in housing can still be used.

More about retrofitting of door stations and letterboxes
Siedle Vario alt zu Vario neu

Vario old to Vario new

Many years of use in inhospitable conditions have taken their toll on some systems in the Vario 511 series. An adapter enables easy replacement with its successor; while the flush-mount housing remains in the wall. The matching retrofit panel covers any visible differences on the wall.

More about retrofitting of Siedle Vario

Siedle door communication is incredibly versatile.

Information for builders

Who you can trust

Durable and retrofittable

A Siedle system is a safe investment. Because we develop our systems for a long service life. And when developing new products, we attach great importance to backward compatibility and update capability.

Quality and sustainability

Made in Germany

We are a high-tech company that uses the latest production methods. It’s also traditional human qualities and skills that give our products their very own character.

Made in Germany

Simple. Secure.

Siedle products provide functions that make the lives of the people using them simpler and more secure. We avoid excessive and fussy complication in favour of greater clarity.

Technology for people