Features: Multifunctional Clamp Meter: can be used to measure AC current, AC/DC voltage, resistance, Max/Min value, continuity test, and diode test. Measuring Range: 400A AC current, 600V AC/DC voltage, and 40M resistance. Data Hold & Max/Min: hold the measured data for conveniently checking or observing data. Backlight Function: 1.6-inch LCD screen with backlight ON/OFF switchable for display data clearly. 28mm Jaw Opening: jaw opening of 28mm to measure current without touching or interrupting the circuit. Accessories: comes with a pair of test probes for convenient measurement, and a black zipper pouch for storing the clamp meter. Power Supply: powered by 2*1.5V AAA battery (NOT included), convenient to operate. Reliable & Functional: with good reliability and high precision, really practical for electrical equipment testing and maintenance. Specifications: Material: ABS Safety Rating: CAT II 600V, CAT III 300V Display Count: Max. 4000 Jaw Opening: 28mm Auto off: 15 minutes Range: Auto AC Current Range: 4.000A/40.00A/400.0A AC Current Resolution: 0.001A/0.01A/0.1A AC Current Frequency: 50Hz~100Hz AC Current Frequency Resolution: 0.1Hz AC Voltage Range: 4.000V/40.00V/400.0V/600V AC Voltage Resolution: 0.001V/0.01V/0.1V/1V AC Voltage Frequency: 10Hz~10kHz AC Voltage Frequency Resolution: 0.01Hz~0.01kHz DC Voltage Range: 400.0mV/4.000V/40.00V/400.0V/600V DC Voltage Resolution: 0.1mV/0.001V/0.01V/0.1V/1V Resistance Range: 400.0/4.000k/40.00k/400.0k/4.000M/40.00M Resistance Resolution: 0.1/0.001k/0.01k/0.1k/0.001M/0.01M Continuity Range: 400.0 Continuity Resolution: 0.1 Diode Range: 4.000V Diode Resolution: 0.001V Operating Temperature: 0~30(humidity ≤ 80%RH), 30~40(humidity ≤ 75%RH), 40~50(humidity ≤ 45%RH) Storage Temperature & Humidity: -20~60, ≤ 80%RH Altitude: 2,000 meters Power Supply: 2 * 1.5V AAA battery (NOT included) Item Size: 215 * 63.5 * 36mm / 8.46 * 2.5 * 1.41in Item Weight: 286g / 10.09oz Package Weight: 380g / 13.41oz Package Size: 23.5 * 9.2 * 5.3cm / 9.25 * 3.62 * 2.09in Package List: 1 * Clamp Meter 2 * Test Lead 1 * Storage Bag 1 * Manual (English)