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: Universal New wireless remote vacuum exhaust shut-off valve controller set with two remote controls colour:Black + blue Material:Aluminium + plastic Package Contents: 1 x controller 1 x Vacuum Controller 1 x wire harness 1 x Hose 2 x remote control 1 set x installation accessories Only 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.