The FLUKE-709H is a precision current loop calibrator designed to measure, source, and simulate current, as well as measure voltage. It delivers best-in-class accuracy of 0.01% ± 2 counts for its 0 to 24 mA and 0 to 30 V dc ranges. A key feature is its built-in HART modem, which allows technicians to read device information, perform diagnostic tests, and trim the mA output on most HART-enabled transmitters. The calibrator operates in a wide temperature range from -10 °C to 55 °C and features a backlit graphic LCD display for easy reading. This combination of a compact loop calibrator and a powerful HART communication tool allows technicians to efficiently service and support HART devices in the field.