All models include 50,000 count resolution, true rms (ac or ac + dc) built-in RS-232 capability, standard Certificate of Calibration, ASYC II (Advanced Safety Concept) design with [ECL010, 1P677, and MIL-T- 28800 compliance, a splash-proof sealed case, and a three-year warranty. The standard SECURX test lead retainers, designed to work with shoul- dered test leads, ensure that the test leads will not be pulled out accidentally. The display features clearly legible 14 mm (0.55 inch) high figures. All models except 5360 feature a backlit display.