ETL UL217 Photoelectric smoke detector alarm 731

UL 217 standard photoelectric smoke alarm 731 offers easy wireless setup with a long-life battery (often 10 years), features a test/hush button, and provides loud alerts, meeting strict US safety standards for enhanced fire protection, reducing false alarms with advanced sensing.

Key Features & Technology

Photoelectric Sensor: Detects visible smoke particles, making it very effective for slow, smoldering fires. UL 217 Standard: Certified to rigorous safety requirements by Underwriters Laboratories (UL), often meeting the 8th or newer editions for better fire safety. ETL Listed: Verified by Intertek (ETL), indicating it meets relevant safety standards, often alongside UL certification. Standalone: Battery-operated (often with a built-in 10-year lithium battery like a CR123A) for easy installation without wiring. Test/Hush Button: Large button for easy testing and silencing nuisance alarms. Loud Alarm: Produces a loud sound (e.g., 85dB at 3m) to warn occupants. Low Battery Warning: Chirps or flashes to alert users when the battery needs replacement (or if it’s a 10-year sealed unit, it signals end-of-life).

Product Specifications

Working voltage:DC3V Built-in lithium battery
Standby current:<5uA
Battery life:10 years
Alarm mode:Siren With Flash (Buzzer& Red LED)
Alarm currtent:60mA
Sound level:>85dB
Execute criterion:UL217