The Edwards Signaling Chime Strobe is a 2-3/4 inch overall diameter chime strobe alarm that produces a loud, piercing electronic tone and bright flashing light for fire, security, and emergency signaling applications. It has a rugged Lexan lens, operates on 24VDC, and provides a sound output of 90dB at 10 feet. The chime strobe is UL Listed and suitable for indoor use. With its weatherproof back box, it can also be used in outdoor locations.