Profile: Cornerstone Sensors, Inc. manufactures precision NTC thermistors and thermistor assemblies for temperature measurement, control, indication & compensation applications. NTC thermistors have an inverse relationship between their electrical resistance and body temperature. These are small, rugged ceramic semiconductors manufactured from compositions of the oxides of metals, such as manganese, nickel, cobalt, copper and/or iron. We provide E200 series NTC thermistors, insulated leads, which is available in the standard two leaded, single thermistor construction.