HEAT INSULATION Features: 3 measurement/ test functions 5 insulation resistance test ranges at 50V, 125V 250V, 500V and 1000V Insulation resistance scale upto 4000MΩ AC/DC voltage range of 0V...750V Comparator Function Live Circuit Indicator Drop Proof The Hioki IR4056-20 Digital Multimeter and Insulation Resistance Tester offers an insulation resistance test at 50V, 125V, 250V, 500V and 1000V DC with an insulation resistance scale of 0...4000MΩ. This meter also includes a Voltage measurement with a 0V...750V range and a resistance measurement range of 0Ω...1000Ω. This meter also come with a comparator function that alerts the user to the failed test with a buzzer and red LED. Includes: Test Lead L9787 Neck Strap Instruction manual LR6(AA) alkaline batteries