Lloytron B820 Photoelectric Smoke Fire Detector Alarm

Lloytron B820 Photoelectric Smoke Alarm Features: 9 Volt Battery Operation (Battery included). Built- In Test Button & Warning LED. Loud 85DB Audible Alarm. 'Hush Button' For Quick Silencing. Photoelectric Technology - Responds Faster To Slow Smoky Fires. Mounting Bracket & Screws Incl.. Safety Clip Won't Allow Mounting Of Alarm Without Battery.