SureGrip Stray Voltage Adapter Test Lead Kit, Operating Temperature: -20 To 55 DEG C, 90 PCT At 0 - 35 DEG C, 70 PCT At 35 - 55 DEG C Humidity, Nominal Resistance: 3000 OHM At 25 DEG C, CAT III 1000 V, CAT IV 600 V Rated, For Use With All Modern Meters With Standard Input Spacing