Supported vendors table needs corrections :

This document needs major corrections …

For example on the table there are no FM modulations.

Honeywell WBD is NOT AM and it’s NOT 433.92 Mhz …

Honeywell uses 2-FSK so it’s FM and on America/Australia uses 916.5 MHz while in Europe it uses 868.30 MHz… and so on … The table only mention AM so i think many entries on that table are not correct…

I came across just such a remote control. it is entirely possible that in other countries the same protocol is used but on a different frequency, modulation

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Agree, but for example on HoneyWell i did never saw a single doorbell on 433.92/AM …