The Extech EX520A RMS Industrial Multimeter measures AC/DC voltage, current, resistance, capacitance, dual sensitivity frequency (electric 1 kHz/electronic 10 MHz), type K thermocouple -45°C to 760°C (-50°F to 1400°F), and bead wire temperature probe -20°C to 250°C (-4°F to 482°F). It features a 6000 count backlit LCD screen, 0.09% basic accuracy, relative/data hold, and auto an auto power function. With a CAT IV-600 V safety rating and an IP67 rating for water and dust resistance, the EX520A is an ideal tool for electricians, HVAC technicians and benchtop technicians who require accuracy, durability, and safety in their electrical testing equipment.