1)SX series Digital Panel Meter 2)Accuracy class: 0.5% 3)ISO, CCC, Shanghai delixi, professional manufacturer Specifications:Digital panel Meter(SX48,SX42,SX72,SX96)1. Model No: SX48,,SX42,SX72,SX96,SX6L,SXT(Digital Panel) ;5. Function: measuring voltage, current, frequency, power factor ;oC): 0~±50(SX6L),0~±50≤80%RH.