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What is the clock behavior on power interruption in iEM3100 / iEM3200 / iEM3300 series energy meters.

Clock behavior on power interruption
iEM3110, iEM3150, iEM3210, iEM3250, iEM3310 and iEM3350: When power is interrupted, the date and time are reset. When power is restored, the device automatically displays the screen to set Date and Time.

iEM3115, iEM3135, iEM3155, iEM3165, iEM3175, iEM3215, iEM3235, iEM3255, iEM3265, iEM3275, iEM3335, iEM3355, iEM3365 and iEM3375: When the power is interrupted, the device retains its date and time information for 3 days. If power is interrupted for longer than 3 days, the device automatically displays the screen to set Date and Time when power is restored.

Note: The above section does not apply to the iEM3100, iEM3200 or iEM3300 models.
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