I genuinely do not know why DIN mounting is almost universal for low-voltage security except inside the USA?
If you are unfamiliar, see this markup detailing DIN Rail-mounted components:
**** **/***** ******** ****** ***** *** mount ******* ******* *** *** ********* just ****** ** ******* **** ****** in ***** **********.
*** *******, *******'* ******** ***** **** screws ** * *****, *** *** company's ******* ***** ***** ** ********* to ***-******* *****:
*** ** * ****** ******** *********** - ** ************* ***********, **************** ***** *********** (****)***** ***** *** *****.
*** ** ******** ******** *****'*. ****** it ** **** ******** ****?
***, * ***** **** ** *** more *******-******* ********. **** ****** *** mounting ** *** ***** ** ************.