General description Quiet and safe, this solenoid valve for aquarium CO2 systems operates with a wide voltage input of 100-240V and outputs DC 12V. It features an updated noiseless design, ensuring minimal disturbance in your aquatic environment. The high-quality power cord, measuring 90cm in length, comes with an "anti-shock" charger, providing safety without hazards. This dual head solenoid valve connects to 4*6mm tubes or bubble counters, making it versatile for various setups. Technical specifications Input Voltage: 100-240V Output Voltage: DC 12V Power Cord Length: 90cm Temperature Design: Operates below 30° Usage This CO2 solenoid valve can be automatically controlled using a timer, allowing it to turn on and off in sync with your aquarium lighting system. This feature helps maintain healthy aquatic plants by cutting off CO2 supply when the lights are off, promoting energy efficiency. Other information Made of durable aluminum alloy for sturdiness Low heat and low noise