This Is What Your Remote Control Can Do; Upper Side - HomeMatic HM-RC-Key3-B Bedienungsanleitung

3 This is what your remote
control can do
Remote controls are used to control the receivers
that they are taught to work with. A single button
can be taught to work with one or more components
and address them all simultaneously. That means
that pressing a single button can execute many
different tasks.

Upper side

1 – Device LED
2 – Control button field
3 – Battery cover
4 – Teach button
26
Lower side