Compatible with: Air spring activated switch is suitable for motorcycle suspension and pneumatic adjustable seats of cars and trucks. A relay (not included) may be needed to turn off the compressor Pneumatic Control: Switch is pneumatic. Please check the plug of the original switch before purchasing to confirm whether it is pneumatic Working Principle: Air spring activation switch is built into the manual paddle valve switch. Pushing the paddle switch up and down can control the opening and closing of the compressor relay. Controls the flow of air from the air tank or compressor to the hanging bag or Seat pneumatic device, and the average bag filling time is 8-12 seconds High-Quality Material: The Spring trigger switch is made of ABS material, and after fine surface treatment, it can have a longer service life and be more durable and reliable Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!