The James A. Haley Veterans Hospital (JAHVH) Sleep Study Clinic is seeking sources for transcutaneous CO monitoring systems for full night diagnostic sleep studies, with a focus on domestic products compatible with existing Nox Medical A1 and C1 Polysomnographic Systems. The required system must include safe, extended-duration skin sensors, stabilized CO reporting, mobility without recalibration, and sleep-specific visual and alarm configurations. This is a market research notice to inform the acquisition strategy, which may result in a brand name or limited source justification if no equal products are identified. No specific budget amounts, submission timelines, or performance location beyond the JAHVH in Tampa, Florida, are mentioned. Responses must demonstrate the system’s ability to meet or exceed the minimum salient characteristics.