Apply to power lines or substations below 220KV for electricity inspection, phase detecting, phase testing, phase sequence judgment, electricity inspection, etc. 1. Model : ETCR1600 2. Transmission Distance : 60M 3. PhaseDetection Voltage : 220V~220kV 4. Phase Qualitative : Same Phase:-25°~25°; Out Phase: 95°~145° and 215°~265° 5. Phase Range : 0.0°~360.0° 6. Power Supply : Host: DC9V, alkaline battery LR6X 6PCS; Detector: zinc-manganese dry battery 6F22, 9V