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The receiver cannot carry out the command (load failure, mechanical blockade etc.)
The receiver is faulty.
13.3 Duty cycle
The duty cycle describes a legally regulated limit on a device's transmission time in the 868
MHz range. The aim of the regulation is to guarantee the functioning of all devices
operating in the 868 MHz range. In the 868.0–868.6 MHz frequency range that we use,
the maximum transmission time for any device is one per cent per hour (that is, 36 seconds
an hour). When the one percent limit is reached, the devices are no longer able to transmit
a signal until the time limit has passed. In accordance with this guideline, SilverCrest Smart
Home powered by Homematic IP devices are developed and produced in full compliance
with all relevant standards.
In standard mode, the duty cycle is generally not reached. However, in certain cases, it
may be reached during initial use or installation of a system due to the increased, radio-
intensive teach-in processes. If the duty cycle limit is exceeded, the device LED (D) will emit
a long red light and the device may stop working temporarily. The device will then start
working again after a short time (one hour maximum).
HmIP-eTRV-B1
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