Micro-Epsilon manufactures a variety of IR temperature sensors including the thermoMETER series. Products include thermal imagers for industrial appilications, pyrometers for hot metals, infrared sensors and handheld pyrometers with laser sightings.

Mikron manufactures temperature sensors for agriculture, asphalt/roofing, automotive, cement, petrochemical, electronics, medical, military, aerospace, and other industry applications. The company's line of sensors includes: single-point temperature sensors; laboratory temperature sensors; ultra high-speed temperature sensors; infrared process temperature sensors, and portable infrared temperature sensors.

Watlow is a supplier of Raytek brand infrared temperature sensors, which have the ability to measure the temperature in fast-moving manufacturing applications. The majority of sensors are compact and handheld, with all sensors able to measure the temperature of a product directly.

GE designs and manufactures thermopile IR temperature and gas sensors, and silicon-based humidity sensors for a variety of applications. The company also produces turbidity and temperature sensors that measure the temperature of wash water in washing machines and dishwashers.