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IQ8Wireless transponder for wall mounting
42 FB 798941 / 10.06
11.3 Important battery information
Battery information relating to power consumption and batteries (Art. No. 805597) for use in
IQ8Wireless RF components
• Insert batteries into the RF devices shortly before initial operation (assigned to the RF
transponders)! Unassigned RF devices consume approx. 4 times more power.
• Bear in mind the sufficient remaining field strength!
Operation with low field strength causes the power consumption to be somewhat higher.
Similar RF devices which were put into operation at the same time may subsequently
register low battery voltage (batt. < 30) on the FACP after different running times.
The probability of interferences (e.g. caused by electromagnetic pollution or alternating
field strength) rises very high relating to the reduced field strength. If the wireless
transmission is interrupted and a wireless devices must leave the frequency hopping
mode, it is operated in the basic channels until the assigned transponder is able to take
this device into the frequency hopping mode again. In this mode the current consumption
may increase up to 4 times higher.
• How often a RF transponder has to search for one of its RF devices in the base channel
can be determined using the Service PC on the >disturbance< counter in the programming
software tools 8000.
• If the 12/24 V DC power supply to a RF transponder should malfunction, the radio
operation of the transponder terminates and all the assigned RF devices search in the
base channel for this RF transponder. This causes the RF devices’ power consumption to
be up to approx. 4 times higher.
• In the case of an alarm, the detectors in the RF devices consume somewhat more power.
• In an uncharged state, the approved batteries (Art. No. 805597) have a very low self-
discharge rate (1 % annually @ 25 °C ± 10 °C). Storage outside this temperature range
causes the self-discharge rate to increase. The nominal capacity of the batteries
decreases, for example, at low temperatures and is 20-30 % lower during operation near to
the freezing point.
• Due to “passivation effects” batteries which are more than 3 years old should no longer be
used. Batteries are labelled accordingly. e.g. F.02.277.E
F = France
02 = in the year 2002
277 = produced on the 277th day
E = charge
• For initial operation, the batteries are inserted and then
charged automatically for a short
time and with a very high current. In rare cases, this may cause low battery voltage
(batt. < 30) to be immediately displayed on the FACP.
Remedy: Activate the RF devices once more using the FACP.
• For functioning devices, the battery voltage is checked approx. every 12 hours
automatically and approx. 2 minutes after insertion of the batteries/after activation (detector
zone/detector) of a RF device.