Kidde Commercial (439DEX-8AW-R) 439Dex Series 8 Inch Explosionproof Fire Alarm Vibrating Bell…

The KIDDE COMMERCIAL 439DEX-8AW-R is an 8-inch hazardous-location vibrating fire alarm bell. Specifically, it carries a red epoxy finish for corrosion resistance. Therefore, it delivers loud, sustained alarm output where ordinary bells cannot safely install.

First, this 439DEX-series bell is rated for Class I, Divisions 1 and 2, Groups B, C, and D. In addition, it is rated for Class II, Divisions 1 and 2, Groups E, F, and G. It also covers Class III hazardous locations. As a result, it suits refineries, flammable-liquid rooms, and paint spray booths.

Furthermore, the bell fits aircraft refueling areas, grain elevators, flour mills, and combustible-dust environments. Mounting requires only two 3/8-inch fasteners on any solid surface.

Key Features of the KIDDE COMMERCIAL 439DEX-8AW-R Bell

• 8-inch (203 mm) gong delivers 92 dB at 1 m (86 dB at 10 ft)
• 20-24 VDC operation with 0.240 A RMS current draw
• Diode-polarized for electrically supervised signaling circuits
• Adjustment-free, self-compensating plunger for maintenance-free operation
• Corrosion-resistant red epoxy finish
• Supplied with wire leads plus a sealing fitting for 3/4-inch conduit
• UL 1203 Listed; UL Listed for Class I/II/III hazardous locations; CSFM Listed

How a Vibrating Bell Sounds

First, applying current energizes the bell coil. Then, the striker rapidly raps the gong while power is present. As a result, the bell produces a long, continuous ring. Therefore, the tone cuts through heavy industrial noise.

Specifications

• Catalog number: 439DEX-8AW-R
• Operating voltage: 20-24 VDC
• RMS current: 0.240 A
• Sound output: 92 dB at 1 m / 86 dB at 10 ft
• Gong diameter: 8 in (203 mm)
• Mounting fasteners: two 3/8 in (10 mm) diameter max, with washers (not supplied)
• Finish: red epoxy (corrosion resistant)
• Conduit: 3/4 in (19 mm) sealing fitting included
• Listings: UL 1203; UL Class I Div 1/2 Groups B/C/D; UL Class II Div 1/2 Groups E/F/G; Class III; CSFM

Companion Sizes

Specifically, the 439DEX family also includes 6-inch (439DEX-6AW-R) and 10-inch (439DEX-10AW-R) variants. Therefore, the 6-inch gong delivers 89 dB and the 10-inch delivers 95 dB at 1 m. As a result, you can match gong size to the ambient noise level.

Order or Get Application Help

Life Safety Consultants stocks the 439DEX hazardous-location bell family. To order the KIDDE COMMERCIAL 439DEX-8AW-R or to verify the right gong size for your area classification, call 1-888-557-0558. Alternatively, email sales@lifesafetycom.com.

For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com