The Kidde 438D-8N5 is an 8-inch vibrating fire alarm bell built for commercial and institutional alarm systems. Diode polarized for coded signaling on supervised NAC circuits, it delivers 86 dB at 10 feet - loud enough to clear corridors and open workspaces without stacking additional devices on the circuit.
Built for the commercial installer
The 430D Series mounts directly on any standard single-gang opening, wall or ceiling, with no special hardware. Indoor use is covered out of the box; add the 449 weatherproof back box for outdoor or exposed installations. FM Approved and UL listed, so it passes inspection on commercial fire alarm projects without a variance request.
Key features
- 86 dB @ 10 ft (95 dB @ 1m): covers standard commercial corridors and open floor plans
- Diode polarized: compatible with coded and supervised NAC circuits
- 120 VAC operation: ties into existing building power without separate power supplies
- Wall or ceiling mount on standard single-gang opening - no adapter plates needed
- Indoor/outdoor capable with optional 449 weatherproof back box for exposed locations
- FM Approved, UL listed: meets commercial fire alarm inspection requirements
Construction
Alloy steel gong with a heavy-duty vibrating mechanism. Gray finish. Draws just 0.034A at 120 VAC, keeping circuit load minimal when stacking multiple notification appliances on a single NAC.
Does this bell work on coded fire alarm circuits?
Can I mount the 438D-8N5 outdoors?
What size electrical box does this bell need?
How loud is the 438D-8N5?
What is the current draw on the NAC circuit?
Spec Sheet
