ELIKE 3266TA 600A Auto-Ranging Digital Clamp On Meter & Multimeter with NCV,AC/DC Voltage,Resistor,Diode,Continuity The clamp-on meter with smooth dial can test ACA ACV DCV resistance continuity diode and NCV Non-contact voltage (NCV) detector senses AC voltage&flashes without contact with curcuit The clamp has two jaws with strong spring can close around a conductor up to 25mm in diameter The meter automatically turns off after 10 minutes of non-use to conserve battery life It is designed according to International Electrotechnical Commission (IEC) safety standard 61010