Kidde Safety 0915 Battery Powered Smoke Alarm

Test Button-Tests unit's electronic circuitry, horn, and battery function Tamper Resist Locking Pin- Helps deter from theft or tampering Low Battery Indicator-Smoke alarm will chirp in the event of a low battery Twist-Off Mounting - For fast installation and easy, safe battery replacement Red LED- Flashes every 30-40 seconds to indicate that the smoke alarm is receiving power Battery Operated (9V battery included) - Protects even during power outages Ionization Sensor - Protects best on fast flaming fires