The OS561 is an economical tool for temperature measurements, with non-contact operation, and user-friendly two-key operation. It features a long battery life of up to 180 hours. This infrared thermometer provides real-time temperature readings and features a “Max” function, which will continually display the maximum reading recorded during a reading session. It has a “Hold” mode which will hold a desired reading for recording by the user. The OS561 features built-in “circle/dot” laser and has a 10:1 field of view. It has a backlit LCD display for easy viewing. Its “auto power-off” feature is fixed at 15 seconds to help preserve battery life.