Kidde KC2-SB4 Standard Smoke Detector Base with Trim Skirt, Terminals
Key Features
- Simplifies installation and wiring for commercial fire systems — fits standard 4-inch square electrical boxes for fast mounting
- Provides secure connections with 4 terminals and LED indicator support to improve monitoring and diagnostics
- Includes SIGA-TS4 6" trim skirt for a neat, professional finish that blends with existing surveillance and security layouts
- Compatible with Optica KC2 series smoke and heat detectors to streamline system design and reduce parts complexity
- US-made reliability and broad model replacement compatibility for easier upgrades and maintenance planning
Quick Specifications
- Product Model
- KC2-SB4
- Brand Name
- Kidde Commercial
- Product Name
- Standard base w/trim skirt, 4 terminals, 6" dia
- Product Type
- Detector Base
Explore the details
Product information
KC2-SB4
Overview
Make detector installation faster and more reliable with the Kidde Commercial KC2-SB4 standard detector base. Designed for commercial security and fire monitoring applications, this detector base delivers a professional, code-compliant mounting solution for Optica KC2 smoke and heat detectors. The base simplifies wiring with four sturdy terminals and supports a remote LED indicator, improving on-site diagnostics and ongoing supervision of alarm circuits. Built to mount on standard 4-inch square electrical boxes, the unit includes a SIGA-TS4 6" diameter trim skirt for a clean, low-profile appearance in finished ceilings. Rated for 33V DC input and compatible with both smoke and heat detectors, the KC2-SB4 integrates easily into existing surveillance, security, and building monitoring systems. Manufactured in the U.S. and designed to replace multiple legacy models, it reduces inventory complexity and supports quicker service calls. Ideal for contractors, integrators, and facilities teams specifying detector accessories and bases, the Kidde KC2-SB4 delivers dependable connections and a professional finish — order now to streamline installs or specify it for your next commercial fire alarm project.
Features
- Simplifies installation and wiring for commercial fire systems — fits standard 4-inch square electrical boxes for fast mounting
- Provides secure connections with 4 terminals and LED indicator support to improve monitoring and diagnostics
- Includes SIGA-TS4 6" trim skirt for a neat, professional finish that blends with existing surveillance and security layouts
- Compatible with Optica KC2 series smoke and heat detectors to streamline system design and reduce parts complexity
- US-made reliability and broad model replacement compatibility for easier upgrades and maintenance planning
| General Information | |
|---|---|
| Brand Name | Kidde Commercial |
| Manufacturer | Carrier |
| Product Name | Standard base w/trim skirt, 4 terminals, 6" dia |
| Product Type | Detector Base |
| Product Series | KC2 |
| Manufacturer Part Number | KC2SB4 |
| Technical Information | |
| Device Supported | Heat Detector, Smoke Detector |
| Others | |
| Model Number Replaces | 281B-PL, 283B-PL, 521BXT, 521NCRXT, 521NCSXT, 541NCRXT, 541NCSRXT, 731U |
| Physical Characteristics | |
| Depth | 4" |
| Height | 1.8" |
| Power Description | |
| Input Voltage | 33V DC |
| Miscellaneous | |
| Features | LED Indicator |
| Country of Origin | US |
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Is this right for your project?
Confirm the model, required accessories and delivery needs before ordering.
- SKU:
- KC2-SB4
- Manufacturer part:
- KC2-SB4
How do I confirm compatibility?
Check the specifications and manufacturer documents for your existing system. Send us your model numbers and project requirements if you need help selecting equipment or accessories.
Ask a product specialistWhen will this item ship?
Availability is shown above. Special-order items and project quantities may need additional lead time. Contact us to confirm a delivery date before scheduling installation.
Shipping, freight and delivery detailsWhat should I know about returns?
Returns require an approved RMA. Consult the linked return policy for deadlines and eligibility. For standard non-defective returns, eligible factory-sealed items carry a 15% restocking fee and customer-paid return shipping; open-box and used items are refused. Defective and DOA claims follow the policy's separate terms. Special orders and other exclusions are final sale.
Read return eligibility and exclusionsKidde KC2-SB4 Standard Smoke Detector Base with Trim Skirt, Terminals
KC2-SB4