The Kidde 438D-6N5-R is a 6-inch vibrating fire alarm bell built for commercial fire alarm notification. Diode polarized for supervised NAC circuits, it runs on 120 VAC at just 0.034 amps - low enough to maximize the number of devices on a single circuit without tripping current limits. Ships with the 449 weatherproof surface-mount back box for outdoor installations.
Built for the commercial installer
The alloy steel gong delivers a loud, resonant tone that cuts through ambient noise in warehouses, mechanical rooms, and stairwells. The underdome mechanism and heavy-duty cast housing hold up in demanding environments. UL Listed, FM Approved, and CSFM listed - this bell meets the approval requirements for commercial fire alarm systems across jurisdictions.
Key features
- Diode polarized for compatibility with supervised NAC notification circuits
- 0.034A current draw at 120 VAC - stack more devices per circuit before hitting panel limits
- Indoor/outdoor ready with included 449 weatherproof surface-mount back box and gasket
- Standard single-gang mounting - fits 3-1/2" or 4" octagon boxes, 4" square boxes, or the included 449 back box
- Red finish for code-compliant fire alarm visibility
- UL, FM, and CSFM approved for broad jurisdictional acceptance
Mounting
Each bell ships with a mounting plate that fits any standard single-gang opening. For surface-mount or weatherproof applications, use the included Cat. No. 449 back box (painted gray, includes gasket). Wall or ceiling mount.
Is the 438D-6N5-R diode polarized for supervised NAC circuits?
How many 438D-6N5-R bells can I put on one NAC circuit?
Does this bell work outdoors?
What mounting box does this bell fit?
What approvals does this bell carry?
Spec Sheet
