Features: • Auto power off • Buzzer • LED indication • IP 67 rating • AC voltage detection • High/Low voltage mode • Vibration mode Application Examples: • Low voltage mode: Low-voltage motor (<90V), audio systems, arc welding machines, underground mining lighting, cables with thick insulation layer and other weak electromagnetic AC signals. • High voltage mode: Urban electric supply and three-phase systems (90~1000V) such as power distribution units, electrical panels, electrical appliances, etc.