Exhaust Cutout Vacuum Pump Vacuum Valve Control Unit with Exhaust Vacuum Control Solenoid Valve and remote ControlIncluded:Remote control 2pcsCigarette lighter power line 1pcsbutterflyvalve 1pcsVacuum tube 4 metersFittings 1setVacuum solenoid valve with line 1pcscontroller 1pcs Diameter of Butterfly Valve: 2&2.36&2.5&3.0&3.5inch 1inch=25.4mm Please make sure your all dimensions before place order Please contact us if you want otherversion of thecontroller,we also have phone app version,through the OBD system of your carcontrol the valve'sopen and colse. New circuit design, more stable, more durable, aluminum alloy shell with better heat diipation,dual remote control. 315MHZ RF remote control, remote control distance: 50-100 meters NOTE:Because batteries are contraband, all remote controls do not include batteries and you need to buy them locally. ALL items are Brand New unle stated otherwise on the listing. We sell DIY (Do It Yourself) Items with a few exceptions. We take no responsibility in teaching you how to install. Profeional installation is strongly recommended