... Functions and characteristics:1. Accurately measure the electricity energy with power in the single-phase AC2. Automatically prevent electricity theft, and ... A, 5 (20) A, 10 (40) A, 5 (40) A, 15 (60) A Reference frequency: 50Hz / 60HzWorking voltage: 0.8Un ~1 ... Voltage loop: ≤1W, 5VA Current loop: ≤1VA (1b) Life cycle: >15 yearsPulse output: Photoelectric isolation-type output without source ,with the ...