Fluke 117 Electrician's True-RMS Multimeter

The Fluke 117 is the electrician variant of the Fluke 1xx series — a 6,000-count handheld True-RMS multimeter built around voltage measurement, ghost-voltage suppression, and non-contact voltage detection. True-RMS detection is not a label claim here: EEVBlog and ElectroBOOM bench tests have used the 117 (and its 175/177/179 siblings) as the reference True-RMS instrument for over a decade, and basic DC voltage accuracy of ±0.5% + 2 digits is the published spec. AutoVolt automatically selects AC or DC and the LoZ (low-impedance) mode loads the circuit lightly enough to dump phantom voltages from inductive coupling — useful when a high-impedance meter would otherwise show 30–60 V on a wire that is actually disconnected. The integrated VoltAlert non-contact voltage detector identifies live conductors before probing, and TouchHold captures the reading for display in awkward positions. The display is a backlit 4-digit LCD with white LED backlight bright enough for underhood use. Test leads are the Fluke TL175 TwistGuard set, silicone-jacketed and rated CAT III 1000V / CAT IV 600V — higher than the meter body's CAT III 600V rating, which is the correct way to size leads. Community evidence over 16+ years of continuous production documents 10+ year ownership without failure as routine, not exceptional. Amazon ratings: 5,142 reviews at 4.8 stars.

Buy it if the work is voltage-heavy and the circuits matter: residential 120/240V troubleshooting, EV charging circuits, shore-power systems, parasitic-draw diagnosis, or any automotive measurement where ghost voltages on long harnesses confuse a cheaper meter. The LoZ + AutoVolt + NCV combination is the reason this meter exists, and it is the reason it costs what it costs. The 3-year warranty and community-documented decade-plus service life make it the right buy for a tool that lives in a working garage. Skip it if amps are needed — the 117 has no direct current path and requires a clamp adapter accessory to measure AC or DC current, which is a deliberate distinction from the Fluke 87V or 179. Skip it if K-type thermocouple temperature measurement is needed for exhaust gas, surface, or fluid checks — the 117 does not include a temperature input. A buyer mainly looking at battery voltage, fuses, and basic continuity can do that with a much cheaper meter; the 117's premium is paid for True-RMS, LoZ, and the AutoVolt workflow on circuits where being wrong matters.

The Fluke 117 is declared CAT III 600V with UL Listing and CSA Certification per the publicly published Fluke 117 datasheet and the back-of-meter label. UL Product iQ (productiq.ul.com) returned HTTP 403 on 2026-05-20 and the CSA Group registry was unreachable, so the CAT-rating dimension is scored under this rubric's "database lookup deferred" cap (Score 7) until those databases are reachable for confirmation. Datasheet evidence is strong, but the score is honest about the gate. CAT III 600V transient overvoltage withstand is 6 kV per the datasheet, and EEVBlog teardowns of the Fluke 1xx series confirm the MOV, spark-gap, and clamp-diode protection topology consistent with that rating. Lead insulation (CAT III 1000V / CAT IV 600V) exceeds the meter body's rating — the correct system configuration. No CPSC recall is active and no documented arc-flash or fire incident exists for the 117 in 16+ years of continuous production. Powered by a single 9V alkaline battery; alkaline batteries are accepted at Call2Recycle drop-off and most major retailers, and Fluke maintains service and calibration documentation that enables an extended device life. No Proposition 65 warning is surfaced in the current Amazon listing for this ASIN.