This meter is an intelligent true RMS digital multimeter. It has intelligent and professional measurement function. Full function, with gear display, analog bar multiple display. Specifications: Environment condition of using: CAT. IV 600V; CAT. III 1000V Pollution level: 2 Altitude: < 2000m Working temperature and humidity: 0~40C(<80% RH，<10C non condensing) Storage temperature and humidity: -10~60C(<70% RH, remove the battery) Temperature coefficient: 0.1 accuracy /C（<18C or >28C） MAX. Voltage between terminals and earth ground: DC1000V/AC750V Fuse protection： mA：F630mA/250V fuse 10A：F10A/250V fuse Sampling rate: approx. 3 times/second. Display: 9999 counts Power requirement: Li-ion Polymer Battery 653450 3.7V 1200mAh 4.44Wh Material: ABS Item Size: 165 * 82 * 30 mm / 6.5 * 3.23 * 1.18 inch Item Weight: 273g / 9.63oz Package Size: 22.3 * 12.2 * 7 cm / 8.78 * 4.8 * 2.76 inch Package Weight: 542g / 19.12oz Package List: 1 * Smart Digital Multimeter 1 * Pair of Test Lead 1 * Thermal Couple 1 * Charging Cable 1 * Storage Pouch 1 * User Manual (English)