Features:VC60B+ is an accurate, reliable and easy-to-use insulation resistance tester.Digital electric bridge is used for resistance measurement and insulation resistance test, with wide measurement range, backlight display, test lock, high-voltage and short-circuit input alarm, automatic power-off and other functions.Multiple protection measures, overload protection, alarm function, let you use it at ease.The large LCD display makes the test results clear at a glance.Used in insulation resistance testing of motors, cables, electrical equipment, telecommunications equipment, etc.Specifications:Material: ABSOutput voltage: DC250V/500V/1000V, 10%Insulation range: 250V: 0.1M~20 M/20M~500 M; 500V: 0.1M~50 M/50M~1000 M; 1000V: 0.1M~100 M/100M~2000 MAccuracy: (4% reading + 2 digits)Short circuit current: ;1.6mAMedian resistance: 250V/500V: 2M; 1000V: 5MTerminal location: L&EVoltage test: AC750V; accuracy: (1% reading + 6 digits)Input impedance: 1MFrequency response: (50~200)HzTerminal location: ACV&GDisplay: 90 * 48mm LCD with backlightMaximum display: "1999"Over-range display: "1"Measurement method: A/D conversionSampling rate: 3 times/secWorking temperature: 0~40CWorking humidity: 30%~85%RHPower supply: 8 * 1.5V LR6 batteries (not included); or DC 12V power adapter (not included)Product size: 170*120*60mm/6.7*4.7*2.36inPacking size: 20*16.5*7cm/7.87*6.5*2.76inPackage weight: 730gPacking list:1 * Insulation resistance tester1 * 10A test lead2 * Alligator clips1 * Manual