... line, Empty, Heat malfunction, Interrruption of the AC power supply13.Alarm volume: ≥65dB (A)14.Pump running ... , Operating ≥4 hours after full charge2.Power source: AC 100~240V, 50/60Hz; DC 15V3.Power consumption: ≤15VAClassification & Safety1.Classification ... : Class I; Internal power supply; ...