... switch,Sterilization of fruit and vegetable,ozone machineWater treatment equipment. Ozone generator programmable timer switch• LCD time display• LED indication ON ... OFF per Day or WeekTechnical Data:• Supply Voltage: 12VDC/AC,24VDC/AC,120VAC,240VAC• Frequency: 45-60Hz for VAC models• ... DESIRED VOLTAGE YOU NEED FOR YOUR APPLICATION.... 12VDC/AC, 24VDC/AC, 120VAC, 240VAC TM-619s Ozone generator timer