Summary: Fire units responded to a carbon monoxide alarm at 4294 Ironwood Circle, off Lemon Tree Lane, in Onondaga County, New York. The alarm reportedly activated in the basement approximately 30 minutes prior to dispatch, with no signs of illness among occupants. Multiple fire units, including Moyers Corners and Station 3, were dispatched and coordinated operations using TAC 3. The situation was managed with an exterior test, and the incident was ultimately closed out after confirming no ongoing hazard.