quality assurance tested, more responsive, less expensive, easier to install.Design for all vacuum exhaust valve needed to connect electric power come with wireless controller.Direct ftment, no need modification, installed in few minutes.Application: UniversalNew wireless remote vacuum exhaust shut-off valve controller set with two remote controlscolour:Black + blueMaterial:Aluminium + plasticPackage Contents:1 x controller1 x Vacuum Controller1 x wire harness1 x Hose2 x remote control1 set x installation accessoriesOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.