Auto sleep function. The value cannot be zeroed even if the battery is replaced. LCD screen size: 41×18mm. Oil & Fuel Tank Cap Set Fits STIHL Chainsaw MS171 MS181 MS211 MS231 MS241 MS251. When the battery is about to run out of power, the battery icon will flash to remind you to replace the battery, and the previous data will be recorded after the battery is replaced.
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