Transformer Region Phase Line Identify Meter used to identify the phase A, B and C of low voltage power supply lines in the same transformer region. Can quickly and accurately identify whether the phase lines and phase of two point in the circuit with a long distance from the same transformer region are consistent or not, and accurately judge whether the measured line and the station transformer output are the same line. 1. Model No.: ETCR1100 2. Communication Distance: Without obstacles blocking 8KM 3. Identify Time:≤5 seconds 4. Identify Success Rate: >99% 5.Rated Votlage: 3-phase 4-wires 220V 6. Power Supply: DC 7.4V 2.6Ah rechargeable lithium battery