ITEM NAME:Air Pressure Control Switch 70-200 PSI for Air Compressor 110-140PSI Metal Description: Designed for high-pressure on-board air systems. Preset to turn on the compressor when tank pressure is below 90 psi, and turn off the compressor when the air tank pressure reached maximum ,with a tolerance of  ± 10%. For 12 volt power source. With 1/8inch male pipe thread,and 1/4inch push-on electric terminals. For Air Horns,Train Horns,Air Suspension Compressors,etc. Specification: Material: Metal Size Chart: Size: Approx. 5x3x3cm/1.97x1.18x1.18inch Package Includes: 1 Piece Air Pressure Control Switch Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please confirm whether the product matches your vehicle before buying. SKU: DMO0010156652028504.For Air Horns,Train Horns,Air Suspension Compressors,etc. For 12 volt power source. Designed for high-pressure on-board air systems. Size Chart Size: Approx.