Functions: Compact size: portable to carry and easy to use in one hand. - Jaw opening 36mm: Jaw opening with a diameter of 36mm for measuring without touching or interrupting the circumference. - Automatic range: Intelligent efficient operation for accurate scientific results. - 400A AC measurement: 40A ~ 400A± wide-range measurement (2,5% + 3), suitable for various wires, convenient and accurate. - Non-contact NCV voltage detection: If you want to detect whether there is AC voltage or electromagnetic field in space, you can bring the front end of the meter terminal head closer to the measured object. If so, a beep will sound and the NCV light will flash. - Data retention function: Stop measured data for convenient data checking or observing. - Backlight function: LCD screen with backlight for clear data display. - Low voltage prompt: When a low voltage symbol appears, replace the battery in time. Insufficient power can affect the accuracy of measurement results. - Automatic shutdown: If no operation is performed within 15 minutes, the meter will turn off automatically. - Equipped accessories: Includes 2 pairs of measuring probes for convenient measurements. The black pouch with zipper is used for convenient storage and portability. - Multifunction measurement: AC/DC voltage, AC current, resistance, capacitance, frequency, temperature, NCV test, diode, on-off test. Technical data: Product Material: ABS Line Material: Brass + PVC Colour black Automatic shutdown: after 15 minutes Display: LCD display; Maximum number: 4000 counts Jaw opening: 36mm DC voltage range: 400mV±(1,5%+5), 4V~600V±(1,0%+3) AC voltage range: 4 V ~ 600 V ± (1,5% + 3) AC Current Range: 40A ~ 400A ± (2,5% + 3) Frequency Range: 10Hz-400kHz±(1,0%+5), 400kHz-4MHz±(2,0%+5) Resistance range: 400Ω±(1,2%+3), 4kΩ~40MΩ±(1,5%+5) Capacitance range: 1nF~4μF±(2.5%+10), 4μF~400μF±(4.0%+20), 4mF±(5.0%+30) Temperature range: 0℃~400℃/32℉~752℉±(2.0%+1℃), 400℃~750℃/752℉~1382℉±(2.5%+1℃) Diode: √ Identification of zero line/fire: √ NCV test: √ Sound signal on: √ Backlight: Data storage: √ Product Size: Approx. 184 * 64.5 * 32mm / 7.24 * 2.54 * 1.26in Product Weight: Approx. 129g/4.55 oz 23,5 * 10 * 4 cm / 9,25 * 3,94 * 1,57 inch Package Weight: Approx. 290g / 10.23 oz Read the user manual before use. List of things to pack: 1 * clamp meter; 2 * measuring wires 1 * Storage Bag Storage 1 * User Manual (English)