Control Products Inc. | Harsh Environment Thermal & Waterproof Switches Engineered to Specifications has built rugged control solutions for harsh environments since 1946.

CPI delivers three major product lines into the military and industrial markets: 1. Linear Position Sensors - used in hydraulic cylinders and accumulators. 2. Waterproof Switches - Designed for ultra-high reliability and use in extreme environments. 3. Thermal Switches - Electro-mechanical Thermal Switches with programmable set points up to 1750F. Our niche is delivering these solutions into high performance applications where competing products just don't survive. We deliver many off-the-shelf configurations of switches and sensors but our forte is when we act as an extension of your engineering team to design and quality our products as part of your total system. Typical industries include the military, undersea, oil exploration, mining, or non-automotive vehicular industries. Non-Stop operation, high and low temperature requirements, dirt, dust, sand, vibration, and water exposure are environments where our products excel. The company's success can be attributed to a mission "to be THE company that provides the highest level of service"​. Our engineering team sits side by side with mechanical engineers, electrical engineers, project managers and purchasing to take our products from requirements to production. Our size makes us nimble and able to turn on a dime to react to changing requirements. Our overall mission is focused by an ISO9001/AS9000 quality system and supported by a conservative management philosophy which places a high value on all employees. All CPI's products are designed and manufactured in the USA. Our design philosophy is quality focused but also value oriented. Over 50 years experience in advanced manufacturing techniques have allowed us to produce a robust, superior product set that remains cost effective to manufacture. Follow us to learn more about electro-mechanical switch technology or hydraulic cylinder position sensing and feel free to use us as a resource for your engineering questions.