The Omega OS1561 Infrared Sensor is a non-contact temperature measuring device with built-in focusing optics and target locator, designed for fixed-distance temperature measurement applications. It features a 50-millisecond response time, adjustable emissivity control, and various output options, including 1 mV per degree, 0-10 Vdc, 4-20 mA, and J or K thermocouple. With its rugged construction and simple installation process, the OS1561 is ideal for industrial environments, quality control, and laboratory applications.