Product Features 3-in-1 Function: Enjoy a perpetual calendar, temperature and humidity function, and multimeter capability. You can check the date and time simultaneously while working. The calendar continues to function even when the device is turned off, helping with time management. Multi-Function Multimeter: Capable of measuring AC/DC voltage, AC/DC current, capacitance, resistance, frequency, continuity, diode, and temperature. High-Definition Large Screen: The LCD backlit screen offers clear visibility during both day and night, making it suitable for various working conditions. Hidden Support Frame: Features a vertical support design for adjustable angles and stable positioning. Easy to carry and place during work. Versatile Use: Designed for safety, accuracy, and a wide range of applications, this digital multimeter is perfect for engineering tasks and mechanical maintenance. Usage Precautions Avoid direct contact with the probes to prevent electric shock and ensure personal safety. Inspect test probes before use to ensure no damaged insulation or exposed metal. Avoid using the current and voltage ranges interchangeably to prevent instrument damage. Remove batteries when not in use for extended periods to prevent internal corrosion. Start with the highest range when unsure of voltage or current magnitude, then adjust to the appropriate range. Specifications Color: Black / Red (Optional) Material: ABS AC Current: 0mA-10A, 10μA-10mA, ±(2.2% reading + 10 words) DC Current: 0mA-10A, 10μA-10mA, ±(1.8% reading + 8 characters) AC Voltage: 0mV-600V, 1mV-1V, ±(1.5% reading + 8 characters) DC Voltage: 0V-600V, 0.1mV-1V, ±(1.5% reading + 5 words) Capacitance: 0nF-40mF, 10pF-1μF, ±(6% reading + 20 words) Resistance: 0Ω-40MΩ, 0.1Ω-10KΩ, ±(1.5% reading + 10 words) Frequency: 400/4K/40K/400K/4MHz, ±(1.5% reading + 10 words) Diode, Real-Time Temperature, Buzzer, Humidity, Perpetual Calendar, Timed Alarm Clock, Data Retention, Low Power Prompt: Available Automatic Shutdown: 15 minutes of no operation Max Count: 4000 Count Battery: 2 * 1.5V AAA batteries (Not included) Item Size: 135 * 74.5 * 28mm / 5.31 * 2.93 * 1.10in Item Weight: 114g / 4.02oz Package Weight: 270g / 9.52oz Package Size: 17 * 11 * 4.2cm / 6.69 * 4.33 * 1.65in Package List 1 Multimeter 2 Test Pen Lines 1 Storage Bag 1 Packaging Color Box 1 User Manual (English)