brand new and high quality Features: 100-240V wide voltage input, for DC 12V output, the solenoid for valve 12V noiseless version. Turn on and off automatically when used with a timer. Thanks to this CO2 magnetic solenoid for valve, timer can connect your aquarium's lighting system and cuts off the CO2 supply depending on light. keeping your aquatic plants healthy, more convenient and save energy. Nuts locking design for CO2 pipe connection, anti-shedding and good sealing. No leaking. Made of aluminum alloy material, strong and sturdy. According to user's need to control the outlet for time, convenient, stable and easy to install. CO2 Solenoid for Valve only,other accessories demo in the picture is not included. Specification: Material: Aluminum Alloy Size: app.4.7x5.1cm/1.85x2.01in Color: Silver Optional Style: A,B Plug Style: US, EU Quantity: 1 Pc Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors,the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 x CO2 Solenoid for Valve