1)6 series current voltage meter 2)Accuracy class: 1.5 3)ISO, CCC, Shanghai delixi, ... , voltmeter, frequency meter, power meter, power factor meter. It is used in high and low voltage switch gear, power supply cabinets, controle cabinet and ... the accuracy class 1.5.The frequency meter accuracy class: 1.0Power meter and power factor meter accuracy class: 2.5. Temperature: It ...