... 50w 2.rf power frequency:0.6Mhz,1Mhz,5Mhz 3.OEM oem rf power supply board series:RF power supply specification: input ... voltageAC 220V AC110V max. output power 50W,200w,300w frequency ... touchscreen,three items to be choosed,water flow protection and water quality protection temperature protection,interface could be customized ...