Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

Features:Brand new and high quality.Power: AC220V， 50/60Hz 6.0/4.5VA.Amp: 29mA.100% ED.Temp raise: 35 centigrade.IP65.Size:7.5*7*2.2cm .Keeping your aquatic plants healthy doesn't have to cost a fortune thanks to this CO2 magnetic solenoid valve which wires into your aquarium's lighting system and cuts the CO2 supply at night when your plants don't need it.Package Included:1 x CO2-magnetic Valve Solenoid Valve Night Time Cut-OffNO Retail Box. Packed Safely in Bubble Bag.