Feature 1Come with a high negative pressure vacuum pump, which can easily open exhaust pipe valves. 2No need to change the original car vacuum circuit, more secure and reliable. Onebutton remote start, more convenient. 3Using microcomputer digital technology integrated chip, intelligent control is powerful and stable. 4Largecapacity relays can be used to control motors and equipment with kilowatts. 5New circuit design, more stable and durable, aluminum alloy shell with better heat dissipation. 6No need to worry about the vacuum of the engine anymore and the leakage of the engine pipeline. 7Easy to operate, you can use the ACC circuit or plug the cigarette lighter or the safety power supply +/.Item Type: Exhaust Valve KitMaterial: Aluminum Alloy + PlasticRemote Control: 315MHZ Radio FrequencyRemote Control Distance: Approx. 50-100m/55-110ydBattery Type: 2pcs Built-in CR2025 Button Battery 150mahFitment: Universal .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Control Box1 x Cigarette Lighter1 x Exhaust Solenoid Valve1 x Solenoid Valve Wiring Harness2 x Remote Control1 x Antenna1 x Keychain1 x English ManualNoteProfessional installation is strongly recommended!