| Features: Test Button Tests Unit S Electronic Circuitry, Horn And Battery Function;Battery Operated (9V Battery Included) Protects Even During A Power Outage;Low Battery Indicator Smoke Alarm Will Chirp In The Event Of A Low Battery;Tamper Resist Locking Pin {Battery Operated (9V Battery Included) Protects Even During A Power Outage} {Test Button Tests Unit S Electronic Circuitry, Horn And Battery Function} {Low Battery Indicator Smoke Alarm Will Chirp In The Event Of A Low Battery} {Tamper Resist Locking Pin Helps Deters Alarm Tampering Or Theft} {Red LED - Flashes Every 30-40 Seconds To Indicate That The Smoke Alarm Is Operating}; Sensitivity: 2.06 PCT/ft Obstruction; LED: Red - Normal Operation |
| Photoelectric sensor advanced photoelectric sensor may detect visible particles (associated with smoldering fires) sooner than ionization alarms |
| Test button tests units electronic circuitry, horn and battery function |
| Low battery indicator smoke alarm will chirp in the event of a low battery |
| Tamper resist locking pin helps deter from theft or tampering |
| One button design operates Hush® and test |
| Red LED flashes every 30 to 40 s to indicate that the smoke alarm is operating |
