![HomeMatic HM-Sec-Sir-WM Installation And Operating Manual Download Page 38](http://html.mh-extra.com/html/homematic/hm-sec-sir-wm/hm-sec-sir-wm_installation-and-operating-manual_2153820038.webp)
38
Start-up
•
To activate teach-in mode, click “Teach-in HM device” in
the next window.
•
Teach-in mode remains activated for 60 seconds. An in-
formation box shows how much teach-in time remains.
•
Meanwhile, please activate the teach-in mode of your si-
ren to teach-in as well. Press and hold the teach-in button
(E)
on the siren for at least four seconds. The signal lamp
(C)
starts to slowly flash red.