Measurement of H/L voltage AC current below 110kV. (Above 600V, operate with insulation rod). 1. Model No.: ETCR9000A 2. Measurement range: AC 0mA~1200A ; 3. Max resolution : 1mA; 4. CT Size: Ф48mm; 5. Communication mode: bluetooth, straight distance 10m ; 6. Power Supply : Ablelithium battery DC 7.4V 600mAH