This Multimeter has a built-in, 250 ohm selectable HART® resistor and supplied by 24V loop power. Dual display is 100% larger. Features 1200 ohm drive capability on mA source. Select from two brightness settings on backlight. 0 - 100% mA span check buttons let you toggle between 4 - 20 mA. Infrared I / O serial port is compatible with FlukeView® Forms Software Version 2.1. External fuses are easy to replace. Includes test lead set, alligator clips, four AA alkaline batteries (installed), users manual and quick reference guide.