Denso BHT-300B User Manual page 32

Low Battery Indication
Low battery warning
If the output voltage (of the battery cartridge) drops below a specified lower level while the BHT is in
operation, the BHT displays the following warning message for approx. 2 seconds and beeps three
times. After that, it will resume the previous regular operation.
The battery cartridge will need to be recharged before long. Recharge it as soon as possible.
Shutdown due to low battery
If you continue to use the BHT without replacement or recharge of the battery cartridge after the low
battery warning message appears, then the BHT displays the following message, beeps five times, and
then turns itself off. Depending upon the battery level, the beeper may not sound five times.
Replace or recharge the battery cartridge.
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