Great for the professional technician. The 590 can even test the pulse width of fuel injectors. Unit is completely auto-ranging and features a huge 2 in. high LCD display with back lighting. Modern design， the protective boot is built-in. Auto power-off and data hold. RPM for both conventional and DIS systems. Desirable 20 Amp test range.
18 test functions and 54 test ranges
Dual fuse overload protection
Milliseconds pulse width measures fuel injector on-time
Measures temperature in both F and C， probe included
Carrying case， 2 sets of test leads， temp probe， RPM pick-up included
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