Brand: CPTCAM - Model: ETCR1000 - Color: Black - With 1.7" LCD display - Electricity range: AC 70~600V (continuous sine wave input) - Positive phase: 4 phase-detecting lights and 1 arrow light the lights will be turned on in clockwise R indicating - Negative phase: 4 phase-detecting lights and 1 arrow Light the lights will be turned on in anticlockwise L indicating - Electricity: the light R-S S-T are on in the voltage setting range - Default phase: the light R-S S-T are off - Broken circuit: the light R-S S-T are off - Max testing voltage: AC 600V - Insulating strength:5.4kVrms - Max rated power: 100mVA - Safety suitable for EN61010-1 2001 / EN61010-031 2002 - Powered by 2 x AA batteries (included) - Comes with leather bag & Chinese/English user manual