Power supply: 220 v, ±10% / 50 hz, ±1 hz Working temperature:5, -40, ;working atomsphere: 860 kpa-1050 kpa Ozone density: 350 mg/m3, noise:, ?¤65 db(a) Model: mq-w300(desktop type):480*550*600(mm)/25kg/(dental cast disinfection qty:50pcs) Model: mq-w301(vertical type):480*550*1200(mm)/45kg/(dental cast disinfection qty:100pcs) Model: mq-w302(wall mounted type):580*450*650(mm)/20kg/(dental cast disinfection qty:25pcs)