- 24 V Loop power supply
- Very large dual display
- Enhanced backlight with 2 brightness settings
- 1200 ohm drive capability on mA source
- HART mode setting with loop power and a built-in 250 ohm resistor
- 0% and 100 % buttons to toggle between 4 and 20 mA sourcing for a quick span check
- Externally accessible fuses for easy replacement
- Infrared-port to process data in FlukeView Forms (V2.1) software
Fluke 789 features that are also included in the Fluke 787
- Precision 1000 V, 440 mA True-RMS digital Multimeter
- 0.1% dc voltage accuracy
- 0.05% dc current accuracy
- Frequency measurement to 20 kHz
- Min/Max/Average/Hold/Relative modes
- Diode Test and Continuity Beeper
- Simultaneous mA and % of scale readout
- 20 mA DC current source / loop calibrator / simulator
- Manual Step (100%, 25%, Coarse, Fine) plus Auto Step and Auto Ramp
- Externally accessible battery for easy battery changes