Pair 125800-01 with the documented 149369-01 Enhanced Keyphasor main module and keep the input wiring within the non-isolated range. Configure threshold, hysteresis and events per revolution from the actual transducer signal, then verify buffered and rack Keyphasor outputs.
Important Notice: Confirm quotation scope, physical marking, included accessories and installed-system compatibility before work.
Important Notice: The first document is an Apter Power model-specific technical reference; the second link is the unmodified official manufacturer publication.