Commercial building mechanical fire alarm Heard on: Seminole County Fire and EMS 00:15 00:00 Engine 22, mechanical alarm, commercial. Transcript This transcript is auto-generated from live dispatch audio and may be incomplete or inaccurate. It is not an official report and may change. 00:00 Engine 22, mechanical alarm, commercial. 00:02 (number withheld) South US Highway 17-92, select 49 Delta. 00:14 17-92. 2026-09-23 19:25 UTC Fire S US Hwy 17 92, Casselberry, FL 32718 View on map