1. Material: ABS 2. Measuring voltage range: 600V 3. Measuring current range: 400A 4. Measuring resistance range: 40M 5. Battery: 2xAAA 1.5V (not included in this product) 6. Clamp opening size: 30mm 7. Display: VA screen 8. Working temperature: -20 to 1000 degrees Celsius 9. Count: 4000 10. When the voltage is greater than 80V and the current is greater than 3A, the orange backlight will automatically turn on to remind you to pay attention to safety 11. Equipped with dual impedance measurement function to prevent accidental readings caused by wrong voltages 12. Can safely troubleshoot sensitive electronic or control circuits and circuits that may contain false voltages, providing more reliable voltage detection