5ENGLISHLow battery voltage:The remaining battery capacity is too low and the toolwill not operate. In this situation, remove and rechargethe battery.Indicating the remaining batterycapacityOnly for battery cartridges with "B" at the end of themodel number121. Indicator lamps 2. Check buttonPress the check button on the battery cartridge to indi-cate the remaining battery capacity. The indicator lampslight up for few seconds.Indicator lamps RemainingcapacityLighted Off Blinking75% to 100%50% to 75%25% to 50%0% to 25%Charge thebattery.The batterymay havemalfunctioned.NOTE: Depending on the conditions of use and theambient temperature, the indication may differ slightlyfrom the actual capacity.Switch action11. Switch triggerCAUTION: Before inserting the battery car-tridge into the tool, always check to see that theswitch trigger actuates properly and returns tothe "OFF" position when released.To start the tool, simply pull the switch trigger. Toolspeed is increased by increasing pressure on the switchtrigger. Release the switch trigger to stop.Lighting up the front lamp11. LampCAUTION: Do not look in the light or see thesource of light directly.Pull the switch trigger to light up the lamp. The lampkeeps on lighting while the switch trigger is being pulled.The lamp goes out 10 -15 seconds after releasing thetrigger.NOTE: Use a dry cloth to wipe the dirt off the lens ofthe lamp. Be careful not to scratch the lens of lamp, orit may lower the illumination.