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What is the clock backup feature?

April 26, 2017backup clock feature

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What is the clock backup feature?

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An additional internal battery supports the clock when the main battery is removed. You can leave the battery out of the meter for up to 72 hours and still retain the time and date. If you replace the battery within that time, the meter will ask you to verify the time and date the next time you turn it on. When you replace the main battery, the internal battery will automatically recharge. If you do not replace the battery within 72hours, the meter will retain the time and date that was stored immediately before the internal battery was depleted.