Description ANENG 621A Large Color Screen True RMS digital profeional multimeter 9999 Counts Smart AC/DC Current Voltage Tester Analog Bar Auto Range Tools A.Overview: Automatic selection of measurement functions and ranges. Full-scale overload protection. The maximum voltage allowed between the measuring terminal and the earth is 1000V DC or 750V AC The maximum LCD display value is 9999 digits. Polarity indication: Automatic indication, means negative polarity. Overrange display: OL or -OL . Sampling time about: 3 times / second Auto shutdown time: 15 minutes Power supply: 3.7V/600mAh lithium battery Operating temperature: 0c - 40c B.Specification: Function Range Accuracy AC Current 999.9mA/10A(Min 20mA/Max 10A) +-(1.0%reading+8 digits) DC Current 999.9mA/10A(Min 20mA/Max 10A) +-(1.0%reading+5 digits) DC Voltage 999.9mV/9.999V/99.99V/999.9V +-(0.5%reading+3 digits) AC Voltage 999.9mV/9.999V/99.99V/999.9V +-(0.8%reading+5 digits) Line on-off Test -- 0.1 Resistance 999.9/9.999k/99.99k/999.9k/9.999M/99.99M +-(0.8%reading+3 digits) Diode Test -- 1V Capacitor 9.999nF +-(10%reading+40 digits) 999.9nF/9.999uF/99.99uF/999.9uF/9.999mF/99.99mF +-(2.5%reading+20 digits) Temperature -40~1000 +-(1%reading+3) -40~1832 +-(1%reading+3 ) Frequency 100Hz/1000Hz +-(1.0%reading+5 digits) 100Hz/1000Hz +-(1.0%reading+5 digits) C.Package Include: According to your choice