Standard Detector Base with Trim Skirt, EC2 Series, 4-Inch Square
SKU KD-KC2-SB4
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The KC2-SB4 is the standard detector base for Kidde's KC2 series two-wire conventional detectors, sized for 4-inch square electrical boxes and shipped with an integrated trim skirt that hides mounting tabs for a clean finish. It carries the same detector compatibility and wiring as the round KC2-SB, just built for a square-box rough-in.
Built for square-box rough-ins
Use the KC2-SB4 anywhere the job was roughed in with a 4-inch square box rather than octagon or single-gang — the included trim skirt means there is no separate skirt to order and install. Covers the KC2-H, KC2-OS, and KC2-OSH detector heads under the same S10AR2 base identifier as the round KC2-SB.
- Sized for 4-inch square electrical boxes
- Trim skirt included: hides mounting tabs, no separate part to order
- Remote LED output: terminals built in for an optional GSA-LED remote alarm indicator
- One base, three detector heads: covers KC2-H, KC2-OS, and KC2-OSH under the S10AR2 identifier
Specifications
| SKU | KD-KC2-SB4 |
|---|---|
| Brand | Kidde Commercial |
| Form factor | Standard detector base with integrated trim skirt, 4-inch square box mount |
| Compatibility | Kidde KC2-H, KC2-OS, and KC2-OSH detector heads (S10AR2 compatibility identifier) |
| Compatible electrical boxes | 4-inch square electrical box |
| Wiring | Class A or Class B; 5.1K ohm, 0.5W EOL resistor (P/N 06-220184-001) |
| Remote LED output | Yes, terminals built in for optional GSA-LED remote alarm indicator |
| Color | White |
Documents and resources
FAQs
What's different between the KC2-SB4 and KC2-SB?
The KC2-SB4 is sized for 4-inch square electrical boxes and ships with an integrated trim skirt. The KC2-SB mounts to single-gang, octagon, or BESA boxes without a skirt.
Does the KC2-SB4 need a separate trim skirt?
No. The trim skirt is included with the KC2-SB4 to hide mounting tabs.
What detector heads work with the KC2-SB4 base?
The KC2-H, KC2-OS, and KC2-OSH conventional detector heads via the shared S10AR2 base identifier.
Does the KC2-SB4 support a remote LED indicator?
Yes. Terminals for the optional GSA-LED remote alarm indicator are built in.
