Specification
Combination Smoke and  
Carbon Monoxide Alarm
Sealed Lithium Battery Power
Voice Alarm 
Announces the hazard type detected.
Test/Hush Button 
A single button that tests alarm circuitry and 
temporarily silences nuisance alarms. 
LED Indicator 
A flashing red indicator blinks to correspond 
with alarm sound, unit error mode, and standby 
condition.
Combined Smoke and Carbon Monoxide Alarm 
Unique sensor algorithm detects real fires faster and 
reduces nuisance alarms.
Sealed-In Lithium Battery 
Unit will continue to operate for 10 years. Alerts 
user to replace alarm after 10 years of operation.
Description
The Kidde P3010CU is a 10-year, sealed battery, smoke and 
carbon monoxide alarm with a voice warning system that features 
photoelectric and electrochemical sensing technology with Smart 
Hush feature. This combination alarm combines the detection 
capabilities of a photoelectric sensor with that of an electrochemical 
sensor, which is used to detect CO. When either sensor notices a 
potential hazard, it will communicate with the other. Depending on 
what is detected, the alarm will adjust its smoke sensitivity in order 
to better discriminate between a real hazard and a false one. This 
constant communication enhances the alarm’s overall performance 
and significantly reduces the potential for a nuisance alarm. 
The voice warning system announces “Fire”, or “Warning, Carbon 
Monoxide” to help eliminate any confusion and clearly warn you 
and your family of a smoke or carbon monoxide danger.
The sealed in lithium battery will power the unit for the entirety of 
its 10 year life, eliminating the need for battery replacement and 
worry about unauthorized battery removal. The alarm provides 
continuous protection from smoke and carbon monoxide, even 
during power outages. 
The alarm will automatically activate when it is attached to the 
mounting bracket; there are no pull-tabs, no switches, everything 
is automatic. At the end of alarm life, the unit will chirp, indicating 
the alarm is in need of replacement. The customer can use a simple 
tool such as a screwdriver to deactivate the unit, stopping the chirp 
and making it safe for disposal. 
Leading authorities recommend that both ionization and 
photoelectric smoke alarms be installed to help ensure maximum 
detection of the various types of fires that can occur within the 
home. Ionization sensing alarms may detect invisible fire particles 
(associated with fast flaming fires) sooner than photoelectric 
alarms. Photoelectric sensing alarms may detect visible fire particles 
(associated with slow smoldering fires) sooner than ionization 
alarms.
Features and Benefits
•  Combination Smoke and Carbon Monoxide Alarm – Smoke 
and CO sensing technologies work together to detect real fires 
faster and reduce nuisance alarms. 
•  Voice Alarm – Announces the hazard type detected thereby 
helping to speed up the correct reaction. Alarm announces 
“Fire!” when a smoke or fire hazard is detected and announces 
“Warning Carbon Monoxide” when a CO hazard is detected. 
•  Sealed-In Lithium Battery – Sealed-in lithium power supply; 
no battery replacement required over the 10 year life of the 
alarm. Eliminates worry about battery removal or unauthorized 
deactivation of alarm.
•  Photoelectric Sensor – Smoke alarm contains advanced 
photoelectric sensor that may detect visible particles (associated 
with smoldering fires) sooner than ionization alarms.
•  Self Activation – Alarm automatically activates when attached 
to the mounting bracket.
•  Test/Hush Button – Tests alarm circuitry and activates Hush 
features.
•  Smart Hush
TM
 – Temporarily silences nuisance alarms for 
approximately 9 minutes and will not allow hush mode unless 
the unit is in alarm mode.
• LED – Red LED will blink in conjunction with the alarm sound.
•  End of Life Warning – Alarm chirps twice every 30 seconds to 
indicate the unit is in need of replacement.
•  End of Life Hush
®
 – End of life indication can be silenced three 
days at a time up to 30 days to  
allow for alarm replacement at  
a more convenient time.
•  UL217 and UL2034 Listed
•  10 Year Limited Warranty
10
Model P3010CU
See user guide for additional important information.


