The electronic blow off valve is available in both 12 volt and 24 versions. This valve work seamlessly and automatically to instantly unload the cylinder head pressure of a compressor as soon as the compressor reaches its pressure switch upper cutoff psi. Advantages include lower compressor inrush amperage, less stress on the bearings and zero pressure compressor startups. It only takes a few minutes to install on any compressor. This is also very useful in applications where voltage and incoming amperage may be marginal such as solar powered compressor systems, weak batteries, etc.