Features:1. Automatic range, compact and easy to carry2. Shockproof jacket, anti-drop and shock-proof, double-layer protective cover, strong and anti-drop, the inner layer is made of ABS fireproof material, made of high-quality rubber, shock-proof and anti-shake3. Automatically shut down when there is no operation, save power and energy4. Flashlight and backlight display design, let you be safe and secure in dark corners5. On-off buzzer, stable performance, simple and practicalSpecifications: T21D (auto range)AC voltage: 100mV-600V (1%+4)DC voltage: 0.1mV-600V (0.5%+5)AC current: 0.01mA-10A (1.5%+5)DC current: 0.1-60M (1.2%+5)0.1-60MResistance: 0.1-60M (0.8%+5)NCV (Non-Contact Voltage Detection): YesCapacitance: 0.01nF-100mF (4%+5)Frequency: 0.01-9.999MHz (1.5%+5)Temperature: -20-1000Diode: yesOn-off buzzer: yesScreen Display: BacklightMaximum display: 5999True Valid Values: YesFlashlight: yesRange: auto rangeData retention: yesAutomatic shutdown: yes, 15 minutesSampling rate: 3 times per secondPower supply: AAA battery *3 (included)Weight: about 220g (including battery)Product size: 147*71*45mmProduct List:Digital multimeter*1Table pen*1Manual*1