Good product RFElettronica, ANENG 620A Digital Multimeter, 4.7 inch Automatic Smart LCD Screen True RMS, Resistance, Capacity, Diode, Temperature, Frequency Test, Red Features: Manual test + Auto 6000 counts digital display True RMS AC DC Voltage Measurement AC DC Current Measurement Continuity measurement Resistance measurement Test diodes Capacity measurement Temperature measurement Frequency measurement Specifications: Automatically select the measurement function and range. Overload protection throughout the range . Max. voltage between the measuring terminal and the? Earth: 600 V? DC or 600V AC Display: 4.7 inch LCD? Max. Display value: 6000 digits. Polarity indication: automatic indication and "-" indicates negative. Off-scale display: "0L" or "-0L". Sample time: about 3 times / second., Bar graph 10 times / second Unit display: display function and amount of electricity. Automatic shutdown time: 15 minutes Power supply: 1.5V × 2 AAA battery (not included) Battery undervoltage indication: LCD display symbol Temperature coefficient: less than 0.1 × accuracy / ?. Operating temperature: 18? ? 28 ?. Storage temperature: -10? ? 50 ?. ? Range Resolution Accuracy AC Current 6000mA 1mA ± (1.0% reading + 8 digits) 10A 0.01A Continuous current 6000mA 1mA ±