Kidde KA-B2 Quick Convert Adapter

The Kidde Residential KA-B2 Quick Convert Adapter delivers fast, reliable conversion for legacy plug‑in smoke and combination detectors so you can upgrade alarms without rewiring. This detector accessories & bases adapter supports pre-June 1, 2003 First Alert models (SA4121B) and BRK models 4120, 4919, 5919 and 86RAC, and is compatible with all AC/DC Kidde smoke and combination alarms. With plug-and-play installation (manufacturer part number 21028268, replaces model 900-0150-025), the KA-B2 preserves existing wiring and mounting bases to minimize downtime, reduce labor costs and avoid costly callbacks. Ideal for contractors, security integrators and property managers, it keeps surveillance and fire monitoring systems operational during upgrades and supports broader security and safety strategies. Backed by a 5-year limited warranty, this compact adapter is a dependable detector accessory that streamlines replacement projects in residential and light-commercial settings. Add the Kidde KA-B2 Quick Convert Adapter to your next job to simplify alarm replacements and maintain continuous monitoring.

• Simplifies retrofits by allowing fast plug-and-play replacement of legacy First Alert and BRK detectors
• Preserves existing wiring and bases to cut installation time and reduce labor costs for contractors
• Ensures compatibility with all AC/DC Kidde smoke and combination alarms for uninterrupted monitoring
• Includes manufacturer part number 21028268 and replaces model 900-0150-025 for straightforward ordering
• Backed by a 5-year limited warranty for reliable fire safety and long-term security assurance