System Sensor SPCWL-TILE L-Series Drop-In Ceiling Tile Speaker OnlySystem Sensor L Series Drop In Ceiling speaker strobes, speakers and strobes install faster than the traditional ceiling speaker or speaker strobe appliances. Neutral grill pattern makes this an excellent option for schools, office buildings, retail, restaurants, and hospital applications. Quickly upgrade your existing Horn Strobe application to a voice system or spec this for your next new construction project. These devices also enable faster