... is no need to re-calibrate for long term operation. 2.2 Way of connection: direct connection, through CT, through CT&PT ... material, which is moisture-resistant, fire-retardant, high temperature overall.2.4 One meter with one IC card, combine with personal ... 80), 30(100) 110, 120, 220, 230,240 1.0S, 2.0S50, 60Starting currentOperating temperature range(°C)Relative humidityVoltage circuitCurrent circuit0 ...