Rated operating voltage: AC 220V, 380V (other voltage levels can be customized) Operating Frequency: 50Hz/60Hz Voltage measurement accuracy: ± 1% Frequency measurement accuracy: ± 0.05 Hz Switching time: 0.05-5 seconds (adjustable) Communication Interface: RS485, Ethernet (optional) Communication Protocol: Modbus RTU, TCP/IP (optional) Working Temperature: -20 °C-+ 60 °C Working environment humidity: ≤90% Rh (no condensation) Certification: CE,CB,CCC Standard: IEC 60947-6-1
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