SEFRAM 7305 is a thermocouple module designed to measure temperature using an external K-type thermocouple as a temperature sensor. It has a temperature range of -50°C to 1000°C (-58°F to 1832°F) and an accuracy of ±(2.0% rdg + 2°C) from -50°C to 350°C (-58°F to 662°F) and ±(2.9% rdg + 2°C) from 501°C to 1000°C (933°F to 1832°F). The module has a built-in LED power indicator and a slide switch for selecting the measuring function. It is powered by a standard 9V battery with a battery life of approximately 300 hours. The module comes with a K-type