OEM manufacturer of thermostats (bimetal type), aka temperature safety limit controls, or limit switches. For applications ranging from milliamp/millivolt usage ( as "signal switches" in PLC's /control panels, to large capacity from 25 Amp up to 45 Amp/250VAC resistive loads in large heaters. A variety of model types in automatic reset ( auto cycling), Manual Reset, and S.O.D., a.k.a.("one-time open") types. Open on rise temperature settings possible up to 500 degrees F ( 260C ).