User manual
Battery life
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• If the alarm sound is triggered 3 times, the LED ashes red and the
escape light ashes at the same time, the wireless smoke alarm is
working correctly.
• If no alarm sound is triggered or no visual signal can be detected, the
device is defective and has to be replaced.
10 Battery life
The wireless smoke alarm is powered by a permanently sealed lithium
battery with a typical lifetime of 10 years. Batteries cannot be replaced.
The battery life of typically 10 years can only be enabled under
the following conditions:
• A max. number of 52 function tests and one alarm for 60 seconds
within the group may be performed per year.
• During the entire lifetime, one start-up procedure and two range tests
may be performed and the device may be taught-in to a group once.
• The potential interference of other radio transmitters in the 868 MHz
range may not be above 15 seconds per day.
• The operating ambient temperature of +5° to +30°C has to be main-
tained.
11 General information about radio operation
The wireless system used operates in the 868 MHz band, which is also
used by other wireless services. This means that devices operating on
the same or an adjacent frequency can lead to restrictions in terms of
operation and range.
The specied range of at least 100 m is the open air range, i.e. the range
when the transmitter and the receiver can “see” each other. In practice,
however, there will be walls, ceilings, etc. between the transmitter and
receiver, which may reduce the range accordingly.
Other reasons for a reduced range can be:
• All types of radio frequency interference.