Review on 🔧 Viair 90223 Pressure Switch: Accurate and Reliable Air Pressure Control Solution by Robert Cooper

Does exactly what it's supposed to do; Turn the compressor on when the tank pressure drops to 90psi and turn it off when the pressure reaches 120psi. I use it on a Viair 2 gallon tank with a Viair 45040 compressor installed in an RV for airbags and other uses. It is powered by bus batteries via a backup circuit. This pressure switch has no relay switch, as long as the device has power, it will work. The thread is 1/8 inch so you will need a socket if going into a larger hole.