This is a sources sought notice for a sensing element for fire detection, intended to identify potential manufacturers. The government is specifically seeking companies capable of manufacturing items matching the part numbers currently supplied by Kidde Technologies and Lockheed Martin. Interested manufacturers must submit a Source Approval Request (SAR) package via a specific electronic process, and the review of a submitted SAR can take over 180 days. The notice emphasizes that companies should review forecasted demand before submitting, as SARs may not be processed if item demand is low. Responses to this notice are strictly voluntary and are due by close of business on February 11, 2026.