The air compressor pressure is an extremely necessary component, which is used to install or connect the air compressor or between the air , adjust the air pressure, turn on the energy, and turn off the motor of the compressor. Its main function is to adjust and start pressure of the air compressor. Features - Color: Black. - Material: Plastic. - Size: 12.50X8.00X5.00cm/4.91X3.14X1.97in. - Rated voltage: 220/380V. - Exhaust : 6MM. - Contacts method: normally closed. - Connector size: inch 1/4, 2 points female thread, about 12MM. - Outer diameter of port: 9.5MM. - Maximum : 20A. - Working pressure: 5-8KG (90-125PSI) . - Simple structure, this air compressor bracket assembly is easy to install and remove. - Air compressor pressure to turn on the energy and the motor of the compressor. - High-grade big for small air compressor, which helps to save energy. - Safe and durable plastic material can ensure the durability and stability of the product. - Adopt normally closed contacts mode, easy to use and stable performance. Package list: 1 x Controller