24 V loop power supplyVery large dual displayEnhanced backlight with 2 brightness settings1200 ohm drive capability on mA sourceHART mode setting with loop power and a built-in 250 ohm resistor0% and 100 % buttons to toggle between 4 and 20 mA sourcing for a quick span checkExternally accessible fuses for easy replacementInfrared-port to process data in FlukeView Forms (V2.1) softwarePrecision 1000 V, 440 mA true RMS digital Multimeter0.1% dc voltage accuracy, 0.05% dc current accuracyFrequency measurement to 20 kHzMin/max/average/hold/relative modesDiode test and continuity beeperSimultaneous mA and % of scale readout20 mA dc current source/loop calibrator/simulatorManual step (100%, 25%, coarse, fine) plus auto step and auto rampExternally accessible battery for easy battery changesDisplay current and % of span, auto step, auto ramp-20 to 55 deg C operating, -40 to 60 deg C storage temperature, 95% up to 30 deg C, 75% up to 40 deg C, 45% up to 50 deg C, 35% up to 55 deg C humidity4 AA alkaline batteries, 140 hrs (measurement), 10 hrs (sourcing 20 mA), random, 2 g, 5-500 Hz 1 meter drop test shock and vibration