SOR Inc., with worldwide headquarters located in Lenexa, Kansas, US, has released SOR 1540 level switches designed for harsh environments and hazardous process materials where rugged components are critical. Features include all stainless steel construction, vacuum pressure to 1500psi, temperatures from -40 to +204C with complete isolation of the process from the switching mechanism. With the self-returning manual check feature for the1540 level switches, you can verify switch integrity without ever removing the units from the vessel.