Product Details
The Edwards fire alarm bells come in three gong sizes: 6" (152 mm), 8" (203 mm), and 7" (254 mm), featuring a heavy-duty die cast housing and a rugged, compact mechanism suitable for outdoor use when paired with an optional back box. These diode polarized, vibrating bells are specifically designed for integration with fire alarm control equipment, producing a loud, resonant tone thanks to gongs made from select alloy steel. The bells are epoxy powder coated in red and include a supplied mounting plate that allows for installation directly on a surface, on any single gang box, or on 3 1/2" (89 mm) or 4" (72 mm) octagon, or 4" (72 mm) square electrical boxes. For outdoor installations, the Edwards Cat No. 449 weatherproof back box should be utilized. The 438D and 439D models serve as audible signaling appliances that operate in conjunction with an installed fire alarm panel and detection devices.
