Air/Water Cooled Housing for the Calex Compact Sensors(must be ordered with sensorThis air water cooled housing allows the infrared temperature sensor to withstand ambient temperatures above the normal limit. Depending on the degree of cooling required, air or water may be used as the cooling fluid. To prevent condensation forming on the lens, an air purge collar is included with this item. The air water cooled housing must be ordered with the sensor and cannot be fitted by the user. Works with the Calex PyroCouple, PyroEpsilon and