The Fluke 18B+ is Fluke’s classic economical 4,000-count compact multimeter targeted at electronics repair, LED screen, PCB and home appliance maintenance. Its exclusive dual-mode polarity-free LED test can light up light-emitting diodes without positive/negative polarity identification, the dedicated workhorse for LED bead and backlight panel service.

True-RMS AC measurement handles distorted non-sinusoidal waveforms from switching power supplies and driver boards. An enlarged white backlit 3.5-digit LCD with analog bar graph enables fast visual detection of circuit drift and leakage pulses. Integrated functions include frequency, duty cycle and Min/Max/Avg trend logging, with full resistance, capacitance, AC/DC voltage/current, diode and continuity testing.