No confusion here--this unit has a voice alarm that announces "Fire! Fire!" in addition to a loud, 85dB beeping when smoke or fire is detected
Sealed-in lithium battery lasts the entire ten-year lifespan of the alarm
It's quick and easy to install; alarm automatically activates when attached to the mounting bracket
Smoke alarm contains photoelectric sensor that may detect visible particles associated with smoldering fires sooner than ionization alarms
Includes a test/hush button that tests alarm circuitry and temporarily silences nuisance alarms
Rapidly flashing LED lights alert users if alarm has sounded since the last time the test/reset button was used
Power Source(s): Lithium-Ion Battery; Mounting: Ceiling; Quantity: 1 each.

When every second counts, you'll have your warnings spoken to you in a loud-volume voice: “Fire, Fire!” or “Warning! Carbon Monoxide!” Two-alarm system also announces “Low Battery” when batteries need changing
Also includes chirp signal, flashing LED and test/reset button
Uses three AA batteries (included)
Power Source(s): 3 AA; Mounting: Universal Mounting Bracket; Quantity: 1 each.

Make personal safety your priority with this durable combination smoke and carbon monoxide alarm, with a ten-year product life
This unit comes equipped with a sealed-in lithium power supply that lasts the entire ten-year life of the alarm and eliminates concerns about battery removal and unauthorized alarm deactivation
It's quick and easy to install; alarm automatically activates when attached to the mounting bracket
Smoke alarm contains photoelectric sensor that may detect visible particles associated with smoldering fires sooner than ionization alarms
Includes a test/hush button that tests alarm circuitry and temporarily silences nuisance alarms
Rapidly flashing LED lights alert users if alarm has sounded since the last time the test/reset button was used
End of life warning alarm chirps every 30 seconds when unit is in need of replacement, but can be silenced three days at a time for 30 days to allow time for replacement
Power Source(s): Lithium-Ion Battery; Mounting: Ceiling; Quantity: 1 each.

Test button allows you to quickly check unit's circuitry, horn and battery status
Chirp-style low-battery indicator
Red power-status LED
Protective dust cover
Power Source(s): 9V Battery; Mounting: Ceiling; Wall; Quantity: 1 each.

Safeguard your property with this reliable alarm
Its front-loading battery door means you can change batteries without removing alarm from mounting bracket
Door won't close unless battery is properly installed
Equipped with a tamper-resistant locking feature to alleviate concerns about theft and tampering
Includes feature that allows you to silences nuisance alarms
Adjustable mounting bracket for fast installation and perfect alignment
Requires 9V battery (incl.)
Test/reset button tests all functions including battery
Power Source(s): 9V Battery; Mounting: Wall; Quantity: 1 each.

Keep your family safe without the hassle of battery-replacement and maintenance
The sealed-in battery keeps this carbon monoxide alarm functioning for ten years without the need for replacement
Easy to install alarm automatically activates when attached to the mounting bracket
Test/reset button tests unit for proper operation and resets carbon monoxide alarm
Green LED flashes every 30 seconds, indicating unit is operating properly
Red LED will pulse and a loud alarm pattern will sound when a dangerous level of carbon monoxide is detected
Red LED will also flash every 60 seconds if a high level of carbon monoxide has been detected within 14 days
Power Source(s): Lithium-Ion Battery; Mounting: Wall; Quantity: 1 each.