Features:  Clamp Type Meter: can be used to measure AC current, and NCV voltage test. True RMS measurement, reading more accurate.  Measuring Range: 300A AC current, 0.1A resolution, 3.0% accuracy. 200~1000VAC non-contact AC voltage measurement.  25mm Jaw Opening: jaw opening of 25mm to measure current without touching or interrupting the circuit.  Clearly LCD Display: 1.7-inch large backlit display is easy to read, and it has data hold function for conveniently checking and writing down the data.  Power Supply & Auto-off: powered by 2pcs 1.5V AAA battery(NOT included), and the clamp meter will automatically powers off after 15 minutes of inactivity.  Accessories: comes with a a soft black pouch for storing and protecting the clamp meter.  High Reliability & Efficiency: CAT III 600V safety level, with good reliability and high precision, really practical for electrical equipment testing and maintenance.    Specifications:  Material: ABS  Safety Level: CAT III 600V  Display: 4000 counts  Sampling Rate: 3 times/second  Auto-off: 15 minutes  AC Current: 40A/300A  AC Current Bandwidth: 50~400Hz  Non-contact AC Voltage: 200~1000VAC, 50/60HZ  Max. Jaw Opening: 25mm  Operating Environment: 0~50℃(32~122℉), 45%~90%RH  Storage Environment: -30~60℃(-14~140℉), <90%RH  Altitude: <3000m  Power Supply: 2 * 1.5V AAA battery (NOT included)  Item Size: 157 * 57 * 27mm / 6.18 * 2.24 * 1.06in  Item Weight: 111g / 3.92oz  Package Weight: 183g / 6.45oz  Package Size: 16.5 * 9.5 * 4.5cm / 6.50 * 3.74 * 1.77in    Packing List:  1 * Clamp Meter  1 * Storage Pouch