Six practical function of living, Special query Voltage and electric quantity, saving power visible.
六大生活实用功能，特设电压电量查询，省电看得见。
Eight practical function of living, Special query Voltage and electric quantity, saving power visible.
八大生活实用功能，特设电压电量查询，省电看得见。
Eight practical function of living, Special query Voltage and electric quantity, saving power visible.
八大生活实用功能，特设电压电量查询，省电看得见。
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