The OS151-USB series measures temperatures from -40 to 1000°C (-40 to 1832°F) accurately and consistently with an outstanding response time of 240 mS. The 4 to 20 mA output is compatible with almost any indicator, controller, recorder or data logger without the need for special interfacing or signal conditioning. The OS151-USB has 15:1 optics, making it suitable for most applications. It is specially designed for distant targets and has an optical resolution of 30:1, and it can measure a spot size of 5 mm (0.20 inch) in diameter at 100 mm (3.9 inches) in distance. All these sensors are fully configurable from a PC using the software and USB cable supplied. This user-friendly software enables the user to set the range and emissivity; compensate for reflected energy; apply filtering; and select max, min, average or instantaneous readings.