Phase sequence detection (positive phase, anti-phase, default phase), live line inspection, simple electrical inspection, fire line identification, default phase judgment, broken line location search,DC line breakpoint detection, line maintenance 1. Model : ETCR1000C 2. Available Clamp Wire Size : ø1.6mm-ø16mm 3. Live Power Range : AC70-1000V, 45-65Hz (Sine Wave Continuous Input) 4. AutoShutdown : 5 minutes after booting up, the meter automatically shutdown 5. Insulation Strength : 5.4kV/rms 6. Power Supply : DC 3V AA alkaline batteries (LR6)×2PCS