Function Features：-Controls its own supply voltage(True RMS measurement).-Set 8-level rated operating voltage through the knob.- Measuring frequency range:45Hz-65Hz.- Voltage measurement accuracy<1%.-2 C/O output .- Relay status is indicated by LED.- 1-MODULE, DIN rail mounting. → Download GRV8-03D-08D Catalog → Download GRV8-03D-08D Packing List
