... to didn't region of electric power and temporary of stop supply electric power of urgent use;3,It ... ,It is a safety and credibility;4,it of the physical volume be small and weight light, ... Max vacuum≥0.08MPa(600mmHg)While max vacuum of arriving,the number of times stepped to move≤12,Pedalpressure≤245NNormal foot ... humidity ≤80%(25°C) Product Picture : The energy saving of the foot suction apparatus