Features1Practical Tool: Digital clamp meter is the ammeter troubleshooting tool that allows you to accurately troubleshoot vehicle or internal electrical problems in a very short period of time and get the job done more efficiently. 2Widely Used: Digital multimeter can only measure AC current (not DC current), AC and DC voltage, resistance, capacitance, continuity, diode and frequency (Hz), charged zero line. 3High Accuracy: The digital clamp meter makes it easy to quickly determine if voltage is present. A short press of the NCV button in any gear switches the NCV non contact AC voltage detection function. 4HD Backlight Screen, Screen Light: Digital multimeter adopts HD backlight screen with clear handwriting, parallax free screen and bright screen with clear backlight. Press and hold the H* button to turn on the screen light. 5Universal Use, Low Power Prompt: Digital clamp meter jaws maximum diameter of 36mm / 1.42in, non contact applicable to a variety of wires. When the low battery indicator appears, the battery needs to be replaced and the reading may be wrong.SpecificationItem Type: Digital Clamp MeterMaterial: ABSBattery Information: AAA x 2 (Shipped Without Battery)AC Current: 40A-400AElectrical Resistance: 400~40M.2Capacitance: 1nF-4mFHz Frequency: 4HZ~4MHZDiode: SupportZero Firewire: SupportNVC: SupportOn Off Beep: SupportBacklight Bright Screen: SupportData Hold: SupportMaximum Count: 4000 CountsPackage List1 xDigitalClampMeter2 x Meter Pen1 x Storage Bag1 x Instruction Manual