technical specifications display : 3 1/2 digit, 0.5" ht red led display range : 0-1.999ma resolution : 1 micro amp accuracy : 0.6% ± 1 count. impedance : 2 k ohm facility : line selector switch to measure leakage current from line 1 or line ii to body of the appliance under test. power : 230 v ac ± 10%, 50hz output : socket provided for easy connection of appliance under test dimensions : 220(w) x 70(h) x 180(d) mm3