Voltage multi-tester with phase rotation 검상기 겸용 검전기 DETEX 911/2 (CATU/프랑스) = AC or DC voltage test = Polarity test = Phase/neutral identification = Phase rotation = Continuity test = Operating check = IEC-61243-3 AC, DC Voltage Test Voltage level testing by light-emmitting diodes: 12, 24, 50, 127, 230, 400V and emission of audible signal. Polarity Test Presence of AC voltage signaling by lightin..