Features Display: 3.5 digit LCD, maximum reading of 1999, automatic polarity display. Overload indication: display "1". Measurement method: Double integral A/D switch. Working environment: 0~40 degrees Celsius, <80%RH. 100% brand new product, all refund if unsatisfied If you have any questions. Feature: -Display: 3.5 digit LCD, maximum reading of 1999, automatic polarity display. -Overload indication: display "1". -Measurement method: Double integral A/D switch. -Working environment: 0~40 degrees Celsius, &lt;80%RH. -100% brand new product, all refund if unsatisfied If you have any questions. Specification: Display: 3.5 digital LCD with a MAX reading of 1999, Auto polarity display Measure method: double integral A/D switch implement Sampling speed: 2 times per second Over-load indication: "1" is displayed Power: 2 size AAA batteries (Not include) Low battery indication: support DC voltage: 600V ± (0.8% + 3 dgt) AC voltage: 600V ± (1.2% + 5 dgt) AC current: 20-200-600A ± (2% + 5dgt) Resistance: 2K-200K-2MΩ ± (1.0% + 3dgt) Package includes: 1 X Digital Clamp meter 1 X Set of test leads Package List