DC voltage measuring range : 200mv-1000v, accuracy level : ±(1.0%+2dgt), ac voltage measuring range : 200v-750v, accuracy level : ±(2.0%+10dgt), dc current measuring range : 200î¼a-200ma, accuracy level : ±(1.5%+2dgt), resistance measuring range : 200î-2000kî, accuracy level : ±(1.2%+2dgt). Operating instructions: to avoid electrical shock hazard and/or damage of the not measure voltages that might exceed 500v above earth ground. Before the use of instrument,inspect test leads,connectors and probes for cracks,or crazes in the insulation. Diode and triode : yes , power supply : 9v.one battery, max. Display : 1999, dimension : 122*67*21mm.