{"product_id":"kidde-edwards-439d-8aw-r-polarized-fire-bell-24v","title":"Kidde - Edwards 439D-8AW-R Polarized Fire Bell 24V","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KIDDE - EDWARDS 439D-8AW-R is a polarized fire alarm bell designed for use in commercial and industrial fire detection and notification systems. Operating at 24 volts DC, this bell produces a loud, attention-commanding audible alert upon activation. The polarized design allows it to be wired in supervised circuits where polarity matters for system integrity. It is typically installed by licensed fire alarm technicians and electricians working within NFPA 72 code requirements. The 8-inch bell size delivers strong sound output suitable for areas where reliable audible notification is critical to life safety.\u003c\/p\u003e\u003cp\u003eThis fire bell is suited for commercial buildings, industrial facilities, schools, and similar occupancies that require compliant audible fire alarm notification. It is installed as part of a 24-volt DC fire alarm notification appliance circuit (NAC). The polarized wiring configuration makes it compatible with supervised NAC outputs on conventional and addressable fire alarm control panels. Installation is performed during new construction or retrofit fire alarm projects where code-compliant audible devices are required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePolarized design for use on supervised 24-volt notification appliance circuits\u003c\/li\u003e\n\u003cli\u003e8-inch bell diameter for strong audible output in commercial and industrial environments\u003c\/li\u003e\n\u003cli\u003e24-volt DC operating voltage compatible with standard fire alarm control panel NAC outputs\u003c\/li\u003e\n\u003cli\u003eSold individually as a single unit for flexible installation quantities\u003c\/li\u003e\n\u003cli\u003eDesigned to meet fire alarm notification requirements under NFPA 72 guidelines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation audible notification appliance for 24-volt supervised fire alarm notification appliance circuits on compatible fire alarm control panels.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation must be performed by a licensed fire alarm technician or electrician in accordance with NFPA 72 and applicable local codes. Disconnect and lock out the fire alarm control panel NAC circuit before wiring the device. Observe polarity when connecting to the supervised circuit, as incorrect polarity will prevent proper operation and may cause a trouble condition at the panel. Following installation, perform a full system functional test to verify audible output and circuit supervision.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e: 24 volts DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBell Diameter\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuit Type\u003c\/strong\u003e: Polarized notification appliance circuit (NAC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: Each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Per Unit\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: KIDDE - EDWARDS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 439D-8AW-R\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EDWARDS SIGNALING","offers":[{"title":"Default Title","offer_id":51688594571570,"sku":"439D-8AW-R","price":331.55,"currency_code":"USD","in_stock":true}],"url":"https:\/\/voomisupply.com\/products\/kidde-edwards-439d-8aw-r-polarized-fire-bell-24v","provider":"Voomi Supply","version":"1.0","type":"link"}