Item Type: Multimeter Model: ET8134 Material: ABS Power Supply: 2 x AAA1.5V (battery not included) Purpose: Electricity numerical test Measurement Function and Range: automatic selection Maximum Allowable Voltage between the Measuring Terminal and the Ground: DC 600V or AC 600V Working Height: Approx. 2000m / 6561.7ft Display: LCD Maximum Display Value: 6000 digits Polarity Indication: automatic indication "-" means negative polarity Over-Range Display: "OL" or "-OL" Sampling Time: about 3 times/sec Unit Display: with function, power unit display Automatic Shutdown Time: 15 minutes Battery Undervoltage Indication: LCD displays "battery" symbol Temperature Coefficient: less than 0.1accuracy/ Working Temperature: 18~28 Storage Temperature: -10~50