The Department of Defense, through the Naval Air Warfare Center Aircraft Division (NAWCAD), is conducting market research to identify potential sources for rack-mounted Analog Discrete Input Measurement instruments for the Engine Test Instrumentation Replacement System (ETIRS). The instruments must meet specific performance and environmental requirements, including compliance with military standards for temperature, humidity, and vibration, and should ideally be Commercial Off the Shelf (COTS) or Modified COTS products. This Request for Information (RFI) is crucial for understanding industry capabilities and will inform future procurement strategies, with responses due by December 16, 2024, at 4 PM EST. Interested vendors should contact Paras Patel at paras.d.patel.civ@us.navy.mil or Terrence Shearer at terrence.d.shearer.civ@us.navy.mil for further details and to submit their responses.