KNX Secure successor to Cala KNX T 101

News of 13 November 2025

New model Cala 101 T KNX sec

Cala 101 T KNX sec is the successor to the previous room temperature controller Cala KNX T 101 from the Cala series. The integration of KNX Secure is based on current developments in the KNX environment and expands the technical possibilities of the application. At the same time, the device remains unchanged in terms of appearance and installation, which makes it easier to replace in ongoing projects.

The models are initially available for 55 mm switch frames. Variants for the Swiss 60 mm system will follow shortly.

Further information can be found in our Excel price list and in the extended product data table. Remaining stocks of the previous models can still be ordered while supplies last.

If you have any questions, please do not hesitate to contact our sales team.

Discover Cala 101 T KNX sec

Cala T 101 KNX sec

The changes at a glance

KNX Secure for encrypted KNX communication
Extended application: can be used as main controller or secondary unit to synchronise temperature changes across multiple control points
New item numbers:
71800 Cala 101 T KNX sec, white RAL 9010
71802 Cala 101 T KNX sec, black RAL 9005

Cala 101 T KNX sec in white, room temperature controller with KNX Secure from Elsner Elektronik

Cala T 101 KNX sec

What remains the same

Price unchanged
The changeover does not incur any additional costs. The new model is in the same price range as its predecessor and can therefore be incorporated into current and planned projects without any budget adjustments.
No changes to design, operating logic or installation
The device remains identical in terms of appearance, feel and installation. For planning, replacement and expansion, this means no readjustment, no new installation steps and complete compatibility in existing project environments.

Cala series devices in our Online Shop

Cala KNX MultiTouch T

Push Buttons with Function Icons

Cala KNX MultiTouch T

Push Buttons with Function Icons

Cala KNX T 101

Room Temperature Controller

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Technical articles KNX Secure

Securely connected – with KNX Secure

Building automation is becoming increasingly digital – and therefore more vulnerable. KNX Secure ensures that data, devices and projects are reliably protected. This extension of the KNX standard introduces encryption, authentication and clear security structures into practice – compliant with regulations and ready for the future.

Find out in our technical articles how KNX Secure works, what planners and system integrators need to consider, and why this topic is already essential for modern projects.

To the KNX Secure technical articles

Further technical articles

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