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8. Replacing the Battery
The replacement interval varies significantly for batteries and accumulators. High-
quality alkaline batteries are the most efficient ones, whereas accumulators or cheap
zinc-carbon batteries require a more frequent replacement.
Multipurpose Sensor, Outdoor Sensors
If the indication of the individual sensor is not displayed over a period of more than 4 hours,
the batteries are to be replaced as described in chapters 7.
Check, if the failed data transfer is caused by an interfered radio transmission. In this
case an indication will not be given in the display of the base station neither.
Another possible source of the problem could be for example a metal part placed in
the radio line. Such a problem can be detected by the fact that the data transmission
of other sensors being closer positioned also fail. (See chapter 9 on next page.)
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