The TL73C is a professional digital multimeter designed and manufactured by Beha-Amprobe. It is a safety-rated multimeter, with a large backlit LCD display and capable of measuring AC/DC voltage, AC/DC current, resistance, frequency, as well as diode, continuity, and capacitance measurements. It is CAT III-600V, CAT IV-400V rated and includes a protective holster, which makes it ideal for use on the field or in the laboratory. Other features of the TL73C include a high voltage input warning and auto power off, a data hold button, and a non-contact voltage detector. It also has an overload indicator, a backlit LCD, and an auto-ranging function.