HT65 belongs to the TRMS CATIV 600V series of digital multimeters, made unique by the ability to measure DC voltage up to 1500V. It is also able to measure the temperature through the K probe, the AC / DC current with an external transducer, and the LoZ low impedance voltage input. Like the other multimeters in the series, it has an Autorange function and a defined backlit display.