The TM-150 is a precision digital panel meter designed for accurate temperature and process measurement, supporting various sensors such as thermocouples, RTDs, and analog transducers. It features a 3½-digit LED display with adjustable scaling, polarity indication, and user-selectable decimal points. The device includes calibration and offset adjustments, optional current source enhancements, and can measure temperatures from −55°C to +150°C with good accuracy. It operates on a regulated 5V supply, offers a “press-to-read” mode to save battery, and allows continuous data access without delay.