Summary: A fire alarm was reported at a two-story single-family residence located at 7846 Silk Tree Place, Hanover County, Virginia. Multiple fire units, including Engines 407 and 403 and Battalion 401, were dispatched. The caller reported that the smoke detector activated at 3:00 AM, but no smoke or flames were visible. Upon arrival, Engine 407 found nothing showing from the exterior and began investigating. The alarm was determined to be caused by a faulty detector. No fire or hazardous conditions were found, and no emergency response with lights or sirens was requested.