User Manual

10. 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.

a) Base Station

If the battery empty symbol ( ) is displayed, the batteries have to be replaced.

• Always replace the whole set of batteries.

• Never mix full and semi-full batteries.

• Always use four batteries of the same type and manufacturer.

• Never use batteries and accumulators together.

• As already mentioned before, the station can be operated by accumulators, but if batteries

are used, the operating time will be much longer.

• Proceed as described in chapter 7 c) to replace the batteries.

Please note:

After replacing the batteries, all data/values saved in the base station (e.g. time, data

etc.) are deleted and have to be entered anew.

b) Multipurpose Sensor, Outdoor Sensors

If the indication of the individual sensor is not displayed over a period of more than 24 hours,

the batteries are to be replaced as described in chapters 7a) and b).

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 11 on next page.)