Strobe Light Features 177 Candela LED Strobe Light Provides Visual Warning Intended to Waken Hearing Impaired Residents 1Hz Flash Rate Smart Strobe - Separate Flash Patterns to Distinguish Between Smoke and Carbon Monoxide Strobe Signal Synchronization - When Multiple Units Installed Strobes Flash In Unison Includes Dust Cover Quick-Connect Wiring Harness Twist-Lock Mounting Bracket Power Source Hardwired Product Type Strobe Light For Use With Residential or Commercial Detectors