The KMC Controls SSS-1005 Differential Pressure Flow Sensor is a sensing probe designed for HVAC and appliance controls. With a fitting size of 1/4 inch push on nipple, this sensor is suitable for use with VAV controllers and offers 4 sensing points for precise measurement. The overall length of the sensor is 10 inches, and it includes a 1/4 inch thick foam gasket for easy installation. The sensor is lightweight, weighing only 0.1000 pounds, and is made in the US by the brand KMC Controls. This differential pressure flow sensor is a reliable tool for monitoring pressure in HVAC systems.