System Sensor A77-AB2 i3 Retrofit Adapter Ring

Upgrade and modernize fire detection with minimal disruption using the System Sensor A77-AB2 retrofit adapter ring. Designed as a trim ring/adapter bracket for i3 Series smoke detectors, this white, 6.6" diameter ring lets installers mount smaller i3 detectors where larger heads were previously installed — eliminating costly ceiling modifications and reducing labor time. As an OEM-compatible System Sensor solution from Honeywell, the A77-AB2 preserves a neat, professional appearance while maintaining reliable integration with existing fire mounting and monitoring systems. The adapter supports faster retrofits, keeps downtime to a minimum, and helps facilities maintain continuous security and surveillance coverage during upgrades. Ideal for commercial, multi-tenant, and institutional projects where rapid, code-compliant detector replacement is required. Streamline your next smoke detector modernization with the A77-AB2 retrofit adapter bracket — order now to simplify installation and ensure consistent monitoring performance.

• Simplifies detector upgrades: retrofit i3 Series smoke detectors into larger existing openings without rewiring or ceiling repairs
• Reduces installation time and labor costs with a single 6.6" diameter trim ring that snaps into place
• Preserves a professional finish with a clean white trim ring that matches common ceiling aesthetics
• Ensures OEM compatibility and reliable performance when integrating System Sensor devices into fire monitoring systems
• Minimizes system downtime during maintenance or modernization projects for continuous security and surveillance coverage