1. Power supply: 1.5V x 3 AAA battery power supply (shipping does not include)2. Power supply voltage: US plug 110V, EU plug 220V, UK plug 230V3. Voltage L-N (RMS): range: 85-99.9V/100-265V; resolution: 0.1V/1V; accuracy: about 2 percent+0.2V/1 percent+1V4. Voltage L-N (P-P): range: 121-374V; resolution: 1V; accuracy: about 1 percent+1V5. Voltage N-E (RMS): range: 0-10V; resolution: 0.1V; accuracy: about 2.5 percent+0.2V6. Frequency: range: 45-65Hz; resolution: 0.1Hz; accuracy: about 1 percent + 0.3Hz7. 5-minute automatic shutdown, backlight design is convenient to use8. Circuit fire hazards, to protect the safety of electricity9. Can detect the circuit load capacity, in order to replace or repair in a timely manner10. Small shape, does not occupy space, suitable for home use11. Size: 137 x 60 x 62mm12. Weight: 160g (without battery)Packing list:- Circuit multimeter x 1- Storage bag x 1- Instruction manual x 1