Key features
Rugged, compact advanced insulation resistance tester for electrical contractors and industrial and commercial electricians
Automatically calculates Polarization Index and Dielectric Absorption Ratio
Makes repetitive tests simple and easy with a Compare (Pass/Fail) function 
Offers multiple insulation test voltages: 50 V, 100 V, 250 V, 500 V, and 1000 V

Product overview: Fluke 1507 Insulation Resistance Tester
The Fluke 1507 is a versatile, compact, handheld insulation tester for advanced industrial and electrical insulation testing. Its multiple test voltages make it the ideal tool for many troubleshooting, commissioning, and preventative maintenance applications.
Take advantage of the 1507 full feature set to easily and quickly perform advanced insulation resistance testing. Its handy size and light weight make it easy to pack and use. Additional features, like the remote probe, save both time and money especially when performing repetitive tests. And its reasonable price and rugged reliability make it an excellent value.
Other useful capabilities:
Performs insulation tests from 0.01 MΩ to 2.0 GΩ
Includes live circuit detection to prevent insulation test if voltage >30 V is detected
Includes auto-discharge of capacitive voltage for added user protection
Measures AC/DC voltage from 0.1 V to 600 V and resistance from 0.01 Ω to 20.00 kΩ
Provides lo-ohms earth-bond continuity (200 mA)
Simplifies repetitive or hard-to-reach testing with the remote test probe
Saves battery power with auto power off
Presents results on a large, backlit display
Features CAT IV 600 V overvoltage category rating
Comes with remote probe, test leads, test probes, alligator clips and one-year warranty
Accepts optional Fluke TPAK magnetic hanging system to free your hands for other work
Runs on four AA alkaline batteries (NEDA 15 A or IEC LR6) for at least 1000 insulation tests