Overview: Model: CLAMP BM821.3 inch LCD screen Powered by 2 x AAA batteries (included) Maximum clamp opening: 30mm Built-in buzzer Test ranges & accuracy:DC Voltage: 200m V/2/20/200V /- (0.8% 2d), 600V /- (1% 3d)AC Voltage: 2/20/200V /- (1.2% 5d), 600V /- (1.5% 5d)AC Current: 0.5A /- (5% 20d), 2A /- (3% 20d), 5A /- (3% 20d), 20A /- (1.9% 10d), 400A /- (1.9%±8d) Resistence: 200 ~ 2MO /- (1.0%±3d), 20MO /- (1.2%±5d) Carrying strap, 2 test probes, & nylon carrying case included User's guide included (in Chines Ie