When the unit is not to be used for a long period of time, turn the battery power switch OFF. Refer to 1.2.1 for detailed instructions.
When charging after a long period of storage, it is sometimes the case that charging capacity is lower than that rated. However, rates capacity will be regained after charging several times.
Use only the supplied AC adapter. When voltage or current capacity differs, this may result in damage to the instrument or adapter. After completion of measurement, store the surftest 211 with the AC adapter unplugged from the outlet.