Ultra-low vacuum switches are in light weight with changeover contacts. The choice of body materials include brass, stainless steel, zinc plated steel and aluminium. The versions are user adjustable or factory set. The adjustment ranges from 0.5 to 30″ Hg. It can tolerate over pressures up to 35 bar. Single or dual independently adjustable SPCO/SPDT microswitches are housed in a black anodised aluminium housing sealed to IP66/IP67 standards. Vacuum settings ranges between -2 mBar and -55 mBar