Features: 1. Dual power supply: This multimeter features two power systems, primarily using a lithium battery and automatically switching to dry battery power when needed. 2. LCD color display: The clear high-definition display is visible in both sunlight and darkness, with a maximum count of 9999 for enhanced accuracy. 3. Versatile multimeter: The S30 combines a digital multimeter, infrared thermometer, pen, and circuit analyzer in one tool. 4. High-voltage diode testing: The high-voltage diode mode can illuminate LEDs up to 15V for quick assessments, including various diode tests. 5. Application areas: Suitable for lighting, electronics, home repairs, automotive maintenance, and more. 6. Functionality: Measures AC and DC current, true RMS, maximum display, voltage, infrared temperature, resistance, diode, frequency, beep, high voltage diode, flashlight, automatic identification, dual power supply, wire identification, rechargeable batteries, capacitors, non-contact sensing, and low battery alert. Specification: Model: S30 Maximum count: 9999 Color: Black/Red/Green Power: Built-in 1100mA 3.7V lithium battery DC Voltage: 0~620V (DC Mode), 0.5~620V (Auto Mode) AC Voltage: 0~620V (AC Mode), 0.8~620V (Auto Mode) Resistance: 0.0~9.999