If this alarm goes off will my other alarms go off?
No, this Kidde smoke & carbon monoxide combination detector does not interconnect with other detectors.
Can I use adhesive strips to attach to the ceiling?
No, adhesive strips are not recommended for installation. Mounting bracket and screws are included for your convenience.
If the alarm goes off, how can I tell whether it's due to smoke or carbon monoxide?
The smoke alarm sound is three long beeps, a 1.5 second pause, and 3 long beeps repeating. The CO alarm is four quick beeps repeating every 5 seconds.
Is this detector UL certified?
Yes, this Kidde smoke & carbon monoxide combination detector has passed strict testing standards to meet UL 217 and UL 2034 standards.
Smoke & Combo Detector Comparison Chart
 Battery Combo Alarm |  Battery Combo + Voice |  Hardwired Combo Alarm |  Hardwired Combo + Voice |  Smart Smoke Alarm | |
|---|---|---|---|---|---|
Customer Reviews | — | — | — | — | — |
Price | — | — | — | — | — |
Detection Type | Smoke & Carbon Monoxide | Smoke & Carbon Monoxide | Smoke & Carbon Monoxide | Smoke & Carbon Monoxide | Smoke |
Power Source | 2 AA Batteries (Included) | 2 AA Batteries (Included) | Hardwired; 2 AA Battery Backup | Hardwired; 2 AA Battery Backup | Hardwired;10-Yr Battery Backup |
Voice Alerts | — | ? | — | ? | ? |
Interconnect Capability | ? | ? | ? | ? | ? |
Sensor Type | Photoelectric | Photoelectric | Photoelectric | Photoelectric | Photoelectric |
Low Battery Warning | ? | ? | ? | ? | ? |
LED Light Indicator | ? | ? | ? | ? | ? |
Test & Hush | ? | ? | ? | ? | ? |
Connects to WiFi | — | — | — | — | ? |
Real-Time App Notifications | — | — | — | — | ? |
Free App for iOS or Android | — | — | — | — | ? |
UL Listed | ? | ? | ? | ? | ? |
Detects Smoke & CO
2 units in 1: alerting you to both smoke & carbon monoxide using a single alarm.
End-of-Life Chirp
Alerts you to replace alarm after 10 years of operation.
UL Listed
Comprehensively Tested by UL.
Self-Testing
Equipped with internal, self-testing components that are always checking to ensure the device is operating as expected, giving you peace of mind.*
Hush
Easily test and Hush alarms with the push of a button.
Battery Powered
2 AA replaceable batteries included.
If this alarm goes off will my other alarms go off?
No, this Kidde smoke & carbon monoxide combination detector does not interconnect with other detectors.
Can I use adhesive strips to attach to the ceiling?
No, adhesive strips are not recommended for installation. Mounting bracket and screws are included for your convenience.
If the alarm goes off, how can I tell whether it's due to smoke or carbon monoxide?
The smoke alarm sound is three long beeps, a 1.5 second pause, and 3 long beeps repeating. The CO alarm is four quick beeps repeating every 5 seconds.
Is this detector UL certified?
Yes, this Kidde smoke & carbon monoxide combination detector has passed strict testing standards to meet UL 217 and UL 2034 standards.
Smoke & Combo Detector Comparison Chart
Battery Combo Alarm | Battery Combo + Voice | Hardwired Combo Alarm | Hardwired Combo + Voice | Smart Smoke Alarm |
|---|---|---|---|---|
| Customer Reviews | ||||
| — | — | — | — | — |
| Price | ||||
| — | — | — | — | — |
| Detection Type | ||||
| Smoke & Carbon Monoxide | Smoke & Carbon Monoxide | Smoke & Carbon Monoxide | Smoke & Carbon Monoxide | Smoke |
| Power Source | ||||
| 2 AA Batteries (Included) | 2 AA Batteries (Included) | Hardwired; 2 AA Battery Backup | Hardwired; 2 AA Battery Backup | Hardwired;10-Yr Battery Backup |
| Voice Alerts | ||||
| — | ? | — | ? | ? |
| Interconnect Capability | ||||
| ? | ? | ? | ? | ? |
| Sensor Type | ||||
| Photoelectric | Photoelectric | Photoelectric | Photoelectric | Photoelectric |
| Low Battery Warning | ||||
| ? | ? | ? | ? | ? |
| LED Light Indicator | ||||
| ? | ? | ? | ? | ? |
| Test & Hush | ||||
| ? | ? | ? | ? | ? |
| Connects to WiFi | ||||
| — | — | — | — | ? |
| Real-Time App Notifications | ||||
| — | — | — | — | ? |
| Free App for iOS or Android | ||||
| — | — | — | — | ? |
| UL Listed | ||||
| ? | ? | ? | ? | ? |