Eheim CO2 solenoid valve 24V as night shut-off for a CO2 system in combination with the Eheim PowerLED+ lighting. The solenoid valve can be connected to the power supply of the Eheim PowerLED+ via a PowerLED+ Y cable. About a tim switch, the solenoid valve is then controlled.Eheim CO2 Magnetic Valve 24V+ CO2 night shut-off system+ for use with an Eheim CO2 system+ also for use with a CO2 system from other brands+ has a connector for the Eheim PowerLED++ 24V security low voltage+ maintenance-free+ quiet when in operation+ for hose size: 4/6 mm+ power consumption: 2 W+ including an non-return valve+ note: the magnetic valve can not be dimmed.