HomeMatic HM-LC-Sw1-DR, Инструкция по установке и эксплуатации, Страница: 68 / 76

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Error codes and device LED feedback
9.3 Duty cycle
The duty cycle is a legally regulated limit of the trans-
mission time of devices in the 868 MHz range. The aim
of this regulation is to safeguard the operation 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 seconds
in an hour). Devices must cease transmission when
they reach the 1% limit until this time restriction comes
to an end.
Homematic 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
teach-in processes mean that it may be reached in iso-
lated instances during start-up or initial installation of a
system. If the duty cycle is exceeded, this is indicated
by one long and one short red flash of the device
LED, and may manifest itself in the device temporarily
working incorrectly. The device starts working correctly
again after a short period (max. 1 hour).