The House code and the device code Mittes 2er rotary wheel must be set to operate with the ELRO AB440 Funksteckdosen not like ELRO using DIP switches. In order for the devices to communicate, you have the codes that are sent, converted to the equivalent in the respective third-party system. Helpful tool for this is the following:
(insert as a link in the browser) isn-systems.com/tools/it2elro
ATTENTION! Not all codes have been implemented! Man must seek out compatible codes ...
If you have done this, the wall transmitter works without restriction.
In the example image following codes are set: InterTechno: F6; ELRO: 0101010110