3-in-1 Multifunction Tool: Combines an electric pen, current clamp meter, and multimeter in one compact device, offering versatile functionality for a wide range of electrical tasks, including current, voltage, and resistance measurement Lithium Battery Power Supply: Powered by a rechargeable lithium battery, this tool delivers long-lasting performance, ensuring uninterrupted use without the need for frequent battery replacements Current Sensor with AC/DC Detection: Automatically detects and measures AC/DC currents in the range of 0.5-100 amps, with an option for manual switching. Supports DC current manual zeroing, making it ideal for precision tasks Comprehensive Multimeter Features: Supports multiple functions, including voltage, resistance, continuity, diode, capacitance, frequency, duty cycle, and temperature measurements. This wide array of features makes it an essential tool for electricians, engineers, and DIY enthusiasts Non-contact Testing & Night Lighting: Features non-contact AC voltage detection with low sensitivity mode for added safety, and a built-in night light for easy use in dark environments. The device also supports manual or automatic shut-off options for energy conservation Specifications: DC voltage: Range: 0~610V, Resolution: 0.001V (Accuracy ±(0.8%+3)) AC voltage: Range: 0~610V, Resolution: 0.001V (Accuracy ±(1.0%+3)) DC current: Range: 1~100A, Resolution: 0.1A (Accuracy ±(2.5%+5)) AC current: Range: 1~100A, Resolution: 0.1A (Accuracy ± (2.5% + 5)) Resistance: 0.1Ω~60MΩ, resolution: 0.1Ω (Accuracy ± (1.2% + 3)) Capacitance: 0.01μF~60mF, resolution: 0.1Ω (Accuracy ± (1.2% + 3)) Frequency: 1Hz~9.999MHz, resolution: 0.001Hz (Accuracy ± (2.0% + 10)) Duty cycle: 10.0~95.0%, resolution: 0.1% ± 3.0% Temperature (K-type thermocouple): -50~1000℃, resolution: 1℃ ± (2.0% + 3) Ambient temperature: 0~50℃ Buzzer on/off: When the measured resistance is <50Ω, the buzzer sounds Diode: Automatic identification of diodes less than 3V Automatic relationship: 15 minutes Battery: 400mAh/3.7V