Chapter 2 Getting Started the BHT and System Mode21 Low Battery IndicationLow battery warningIf the output voltage (of the battery cartridge) drops below a specified lower level while the BHT is inoperation, the BHT displays the following warning message for approx. 2 seconds and beeps threetimes. 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 batteryIf you continue to use the BHT without replacement or recharge of the battery cartridge after the lowbattery warning message appears, then the BHT displays the following message, beeps five times, andthen turns itself off. Depending upon the battery level, the beeper may not sound five times.Replace or recharge the battery cartridge.
