S221C is a pressure switch made by Sensata Technologies. It is a temperature-compensated, pressure-actuated switch of the KM12 Series. It has an adjustable limit setting that can be adjusted between 10-1000mbar, with an adjustable set and reset hysteresis. It has an operating temperature range of -20°F to +205°F (-29°C to +96°C) and a weather-proof and vibration-resistant design, making it ideal for the industrial sector. The S221C can be used in a variety of applications, including automotive, HVAC, refrigeration, pumps, compressors, generators and EV charging systems.