The Commercial Electric 400 Amp AC True RMS Digital Clamp Meter with Temperature (CMM-2055) is a versatile meter designed to measure a variety of electrical parameters. It uses a clamp to measure AC current and a non-contact voltage tester (NCVT), while also utilizing test leads to measure both AC and DC voltage, resistance, and continuity. For temperature measurements, it is equipped with a thermocouple. The meter features automatically ranging True Root Mean Squared (TRMS) measurement technology, ensuring high accuracy in readings. Additionally, its backlit LCD screen facilitates easy viewing even in low light conditions, making it a practical tool for diverse testing scenarios.