KEY SPECIFICATIONS & FEATURE: 1.AC voltage test-contact, 70 to 250VAC 2.AC voltage test-non-contact 70 to 1000VAC 3.DC voltage test,loop contact 1.5 to 36VDC 4.DC voltage test, direct contact 70 to 250VDC 5.Polarity check 3 to 36VDC 6.Continuity check, 0 to 100M ohm 7.High-low sensitivity switch; LED and buzzer indication 8.Compact, handy; Adjustable sense arm 9.Battery test; Self-test 10.Detects negative ions