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. Suitable for: One end connect M10*1 external thread or fine adjustment valve, the other end connect 4*6mm tube or bubble counter(single head solenoid valve). Two ends connect 4*6mm tube or bubble counter(double head solenoid valve). anti-shedding and good sealing. No leaking. Durable and Easy to Control: Be made of aluminum alloy material, b and sturdy. Low-temperature design, temperature below 30°, low heat and low noise. According to the user's need to control the outlet time, convenient, stable and easy to install. Warranty: Any problem, please contact our store without hesitation. Honor to serve you! Specification: Name: Solenoid valve Main color: Silver, black Material: Aluminum alloy Power: 1.6W Voltage: 100V-240V input, 12V stable low voltage output Optional type: Single head/double head Single head: M10*1 external thread or fine adjustment valve/ 4*6mm tube or bubble counter Double head: 4*6mm tube or bubble counter Size: 51*48mm Power cord: 90cm Note: Only suitable for valve's output pressures below 6KG. Trim valve interface(if not the M10*1 interface) can not be connected to the single head, can only buy a double-headed solenoid valve and 4*6mm air tube. If you have a small leak when it's off, pls try flipping the inlet/outlet. When the solenoid valve working, the surface temperature is a little high, hot is a normal phenomenon. After connecting well, pls do not touching. Package Information: Package size: 13*8.4*4cm Package weight: Single head: 154g; Double head: 141g Gift Box Packaging Packing List: 1* Solenoid valve 1* Seal ring