The Klein Tools MM500 is a compact auto-ranging multimeter rated CAT IV 600V / CAT III 750V with IP67 ingress protection for dust and water resistance. It measures AC/DC voltage up to 750V and resistance up to 4000 Ω. The 4000-count LCD display provides clear readings, and continuity is indicated both visually and audibly up to 25 Ω. Built to survive a 9.8-foot drop, this meter is suited for demanding field environments. A simplified three-button design covers continuity, resistance, and voltage measurement. This product has been discontinued. Backed by Klein Tools' 1-year limited warranty.
Is the MM500 still available?
No — the MM500 has been discontinued.
What was the MM500 known for?
The MM500 was an auto-ranging average-sensing multimeter rated for 750V AC and with an IP67 waterproof rating — making it the most environmentally protected meter in Klein's previous lineup at that tier.
What current model is closest?
The MM720 (True RMS, LoZ, 1000V) is the current premium multimeter but does not match the MM500's IP67 waterproofing. If full waterproofing is essential, verify current model ratings before purchasing.
# Klein Tools® MM500 Auto-Ranging Multimeter **Model:** `MM500` **Brand:** Klein Tools **Category:** Multimeter > The Klein Tools MM500 is a compact auto-ranging multimeter rated CAT IV 600V / CAT III 750V with IP67 ingress protection for dust and water resistance. It measures AC/DC voltage up to 750V and resistance up to 4000 Ω. The 4000-count LCD display provides clear readings, and continuity is indicated both visually and audibly up to 25 Ω. Built to survive a 9.8-foot drop, this meter is suited for demanding field environments. A simplified three-button design covers continuity, resistance, and voltage measurement. This product has been discontinued. Backed by Klein Tools' 1-year limited warranty. ## Specifications | Attribute | Value | |---|---| | Product Type | Digital Multimeter | | True Rms | No | | Auto Ranging | Yes | | Voltage Range Ac | 750V AC | | Voltage Range Dc | 750V DC | | Resistance Range | 4000 Ω | | Low Impedance Loz | No | | Nist Calibrated | No | | Display Type | LCD | | Display Count | 4,000 | | Cat Rating | CAT IV 600V; CAT III 750V | | Ip Rating | IP67 | | Overall Length In | 5.625 | | Barcode (UPC) | 092644691584 | | Warranty | 1-year limited | ## What's Included - Test leads - Batteries Source: https://www.jaspecs.com/klein-tools/multimeter/mm500-klein-tools-auto-ranging-multimeter/