Tailonz Pneumatic 12Npt Solenoid Valve 4V410-15 12V24V110V220V Single Coil Pilot-Operated Electric 2 Position 5 Way Connection Typeroduct Feature: compact size, easy to assemble and disassemble The manual button tests the status of the product when it is powered upTwo air intake holes cannot be used at the same time When using, you need to block on..