... Panel: Gas flow meter ,Voltage meter ,Current meter ,Work instruction ,Power indication ,On/Off ,Ozone output adjuster ,Pressure regulator ,Trouble ... alarm, Emergency stop device .SpecificationsItemUnitCH-WZQ 50GCH-WZQ 30GCH-WZQ 20GCH-WZQ 10GFlow rate of ... pump, low power for saving energy.Using the collecting pipe, no need to clean, for saving water.PDO air ...