eQ-3 homematic IP Home Control Unit HmIP-HCU1 Installations- Und Bedienungsanleitung Seite 28

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8.2 Duty cycle
The duty cycle is a legally regulated li-
mit of the transmission time of devices
in the 868 MHz range. The aim of this
regulation is to safeguard the opera-
tion of all devices working in the 868
MHz range.
In the 868 MHz frequency range we
use, the maximum transmission time of
any device is 1% of an hour (i.e. 36 se-
conds in an hour). Devices must cease
transmission when they reach the 1%
limit until this time restriction ends.
Homematic IP devices are designed
and produced with 100% conformity to
this regulation.
During normal operation, the duty
cycle is not usually reached. However,
repeated and radio-intensive pairing
processes mean that it may be reached
in isolated instances during start-up
or initial installation of a system. If the
duty cycle limit is exceeded, the device
may stop working for a brief period.
The device starts working correctly
again after a short period (max. 1 hour).
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