This product is the shape memory alloy valve. The outer dimensions are 4.0 x 18.4 x 19.0 mm, and the weight is only 1.5 g. It is a very compact and lightweight valve. Quiet without generating driving noise like a solenoid valve. Compact and lightweight: 19 × 18.4 × t4 mm and approximately 1.5 g. Silent operation. Low power consumption - 0.3 W or less. Significant cost reduction, compared to our conventional valves, was achieved with molded housing and body, as well as simplified actuator structure. Port connection types are available in both “Manifold-Mount Type (O-Ring)” and “Hose Pipes” configurations. The“Manifold-Mount Type (O-Ring)” is equivalent to the Hose Pipes Type but comes with an O-ring and mounting screws. Note: Details such as specifications, etc., may be changed without notice. There is a dedicated driver board that can be used to help operate this valve: Driver Board [SMAD-250A] We also have other versions of the SMV Series valve with different configurations to match your required specifications: SMV Series [Orifice: 0.4 mm / PEEK Body] SMV Series [Orifice: 0.4 mm / PPS Body] SMV Series [Orifice: 0.8 mm / PPS Body] Please feel free to contact us for more details about this low-power consumption valve, the SMV series. CAUTIONS CONCERNING POWER SUPPLY Shape memory alloy may burn out or break due to overcurrent. To prevent this, please use either a constant current circuit or match the conditions shown in the diagram and table. Note: Details such as specifications, etc., may be changed without notice. VIDEO OF SMV SERIES Note: Details such as specifications, etc., may be changed without notice.