Door interlocks

KRONENBERG door interlocks are used to monitor swing doors and sliding doors. They are type-approved according to the European norm EN 81.



for standard applications

KRONENBERG offers doors interlocks in various designs and for many different applications and optionally with integrated monitoring of the emergency release according to EN 81-21.

with integrated electric motor

The product portfolio also includes door interlocks with motor drive for installations that are operated without retiring cam. The motor drives are particularly silent and energy-saving.
Due to the low noise level these door interlocks are ideally suited for use in home lift installations.

with increased level of protection

For special applications KRONENBERG also offers door interlocks with an increased level of protection.
Depending on the requirements you can choose the door interlocks in the levels of protection IP40, IP54 and IP67.
The DL(F)1-EX can be used in installations that require explosion-protection.


We offer an extensive range of accessories for our door interlocks. This includes amongst others latch plates, triangular keys, single and reversing bearing blocks, bowden cables, triangle actuations for an external emergency release and many more.


The extensive range of adaptations allows the exchange of no longer available door interlocks of other brands as well as the refitting of missing safety functions. The program is constantly extended and can be adapted to the individual requirements.