HomeMatic IP HmIP-WTH-B Zusatz Zur Montage- Und Bedienungsanleitung Seite 54

Start-up
The device LED (C) lights up green to indicate
that teaching-in has been successful. If teaching-
in failed, the device LED lights up red. Please try
again.
If no pairing operations are carried out, pairing
mode is exited automatically after 3 seconds.
If you want to add another device to an existing
device group, first activate the teach-in mode of
the existing device in the group and afterwards
the teach-in mode of the new device.
If you want to add a wall thermostat to an existing
device group including a radiator thermostat and
a window contact, you first need to teach-in the
wall thermostat to the radiator thermostat.
Afterwards, you can pair the wall thermostat with
the window and door contact.
If you are using several devices in one room, you
should pair all devices with each other.
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