1Electric Manual Switch: The electric on off switch is built into the manual paddle valve switch, you can control your compressor relay on and off when paddle switch is pushed up and down. 2Application: The air spring activation switch is specially designed for Motorcycle suspension as well as for car and truck seats with pneumatic adjustment. A relay (not included) may be required to turn compressor on off. 3Air Flow Control: The switch can control air flow from tank or compressor to suspension bags or pneumatic seats, and the average fill time on bags is 8?12s. depending upon the size of tank and the maximum Psi in the tank. 4Match to Use: You can utilize a 1/4in Od airline, one from tank or compressor to supply port on the back side of paddle valve and the other from delivery port of the paddle valve to bags or seat. 5Easy to Use: The seat paddle valve control switch can work when two electric wires to compressor for on off control. Engineered with push to snap tabs for easy mounting in a hole on panel (not included). Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.