Standard Detector Base, EC2 Series, 4-Inch, White
Kidde Commercial

Standard Detector Base, EC2 Series, 4-Inch, White

SKU KD-KC2-SB

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The KC2-SB is the standard detector base for Kidde's KC2 series two-wire conventional smoke and heat detectors, connecting the detector head to the initiating device circuit and providing terminals for an optional remote LED alarm indicator. The 4-inch diameter base mounts directly to standard North American electrical boxes, so it drops into existing rough-ins without adapters.

Built for straightforward conventional installs

Compatible across the KC2-H, KC2-OS, and KC2-OSH detector heads under the shared S10AR2 base identifier, the KC2-SB keeps a single base part number covering heat, photoelectric smoke, and combination smoke/heat detectors on the same job. Wiring terminals are accessible from the room side after the base is mounted, and both Class A and Class B wiring configurations are supported.

  • 4-inch diameter base: mounts to standard single-gang, octagon, and BESA electrical boxes
  • 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
  • Class A or Class B wiring supported

Specifications

SKUKD-KC2-SB
BrandKidde Commercial
Form factorStandard detector base, 4-inch diameter
CompatibilityKidde KC2-H, KC2-OS, and KC2-OSH detector heads (S10AR2 compatibility identifier)
Compatible electrical boxesNorth American single-gang, octagon 3-1/2" or 4", European single-gang 75mm, BESA box (4" square box requires KC2-SB4 or KC2-RB4)
WiringClass A or Class B; 5.1K ohm, 0.5W EOL resistor (P/N 06-220184-001)
Remote LED outputYes, terminals built in for optional GSA-LED remote alarm indicator
ColorWhite

Documents and resources

FAQs

What detector heads work with the KC2-SB base?
The KC2-H, KC2-OS, and KC2-OSH conventional detector heads, all compatible via the shared S10AR2 base identifier.
What electrical boxes does the KC2-SB mount to?
Standard North American single-gang boxes, 3-1/2" or 4" octagon boxes, European 75mm single-gang boxes, and BESA boxes. A 4" square box requires the KC2-SB4 or KC2-RB4 base instead.
Does the KC2-SB support a remote LED indicator?
Yes. Terminals for the optional GSA-LED remote alarm indicator are built into the base.
What EOL resistor does this base use?
A 5.1K ohm, 0.5W end-of-line resistor (Kidde P/N 06-220184-001) on Class B wiring runs.
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