AC volt test,contact,70 to 250VAC AC volt test,non-contact 70 to 1000VDC DC volt test ,direct-contact,1.5V to 36VDC DC volt test,direct-contact,70 to 250VDC Polarity check 2 to 36VDC Continuity check ,0 to 100M ohm Battery test:self-test Detects microwave ions High-low sensitivity switch; LED and buzzer indication Compact,handy;Adjustable sense arm Quantity:100pcs Dimension:63.5*26*23cm G.W.:6.0KGS N.W.:4.8KGS