Kidde Bedroom Smoke Alarm, White: * Front-load battery door provides easy access for battery replacement * Hush button allows you to quickly silence nuisance alarms * Test button and LED allow simple verification of battery and alarm operation * Warning chirp sounds when smoke alarm battery needs replacement * Utilizes a state-of-the-art ionization sensor * Uses 85 decibel alarm * Mounting bracket allows for fast and easy installation (mounting hardware included) * Battery tamper-resistant door can be locked to prevent battery removal * Suitable for any room * Unique battery replacement * Quickly silence nuisance alarms * 9-volt battery required (included) * 10-year limited warranty