Description: 1.Rated 70/-220PSI. 2.This pressure switch is designed for high-pressure on-board air systems. 3.Ideal for air horns that require high air pressure. 4.Preset to turn on the compressor when tank pressure is below 90 psi, and turn off the compressor when the air tank pressure reached 110 psi,with a tolerance of10%. 5.Can operate reliably up to 3.5 amps. 6.For 12 volt power source. 7.With 1/8inch male pipe thread,and 1/4inch push-on electric terminals. Specification: Volt: 12V Electric current: 3.5A Fitment: Fits for Air Horns,Train Horns,Air Suspension Compressors,ect. Package Included: 1 X Horn Compressor Air Pressure Switch Dear buyers, we appreciate your business, if you are satisfied with our service, please leave us a positive feedback and rate the details of the transaction (Detailed Seller Ratings) with a "PERFECT 5 STARS". If you have any problems, broken, quality problems, please don't worry, and don't leave bad feedback. Please send us an email first, we will reply you as soon as possible, please allow us to respond within 12 hours. We understand your mood, and will provide you with the best solution for your problem, please give us the opportunity to solve the problem, For any case,please feel free to come to us,we are always here. look forward to and thank you for your trust.