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Features: <ul style="margin-top:0px; padding-top: 5px; padding-bottom: 5px;"><li>6" (152 mm), 8" (203 mm) and 7" (254 mm) gong sizes </li><li>Heavy duty die cast housing </li><li>Rugged, compact mechanism </li><li>Rated for outdoor use with optional back box </li><li>Under dome mechanism</li><li>The Edwards Fire Alarm Bells are diode polarized, vibrating bells designed for use with fire alarm control equipment. </li><li>Gongs are made of select, alloy steel to sound the loud, resonant tone required in fire alarm systems. </li><li>Epoxy powder coated red. </li><li>Supplied mounting plate installs directly on surface or on any single gang box, or on any 3 1/2" (89mm) or 4" (72mm) octagon, or 4" (72mm) square electrical box. </li><li>For outdoor installation, use Edwards Cat No. 449 weatherproof back box. </li><li>The 438D and 439D fire alarm bells are audible signaling appliances for installations that operate in conjunction with an installed fire alarm panel and detection devices..</li></ul>

Edwards Signaling, 438D-8N5-R, Vibrating Fire Alarm Bell 8&quot;, 120 V, 60 HZ, Red Diode

438d-8n5-r-vibrating-fire-alarm-bell-8-120-v-60-hz-red-diode

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