Smart Relay: SREL, SREL.ZK, SREL.ADV
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9.2 Backup Battery
A discharged backup battery can cause the internal clock in the type SREL.ZK or
SREL.ADV Smart Relay to stop. For this reason, we recommend that you check the
time of day at routine intervals. A backup battery will last approximately 10 years if
there is no power supply interruption. If the Smart Relay needs the backup battery
often because of frequent power failures, you should replace this battery routinely.
If you operate the Smart Relay with a battery (SREL.BAT), you are not
permitted to
use the backup battery.
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