Winner
Data from the official X-Sense site.
2026 verdict
The X-Sense SC07-MR Smart Smoke & CO Alarm is the more capable of these two X-Sense detectors, since it covers carbon monoxide as well as smoke and adds an LCD readout, and it takes the win here.
It also interconnects with other X-Sense alarms over RF and can be backed by the same account as a growing set, with a five-year battery and a five-year warranty. The X-Sense Wi-Fi Smoke Alarm counters with a decade of battery life, a built-in light and a hub-free Wi-Fi setup, and it is the simpler, lower-cost way to get smoke alerts on a phone. Choose the X-Sense SC07-MR Smart Smoke & CO Alarm where gas appliances or whole-home interconnection matter, and the X-Sense Wi-Fi Smoke Alarm for straightforward smoke-only protection with the longest battery.
Works with
Connectivity
- Wi-Fi 2.4 GHz
vs
Works with
Connectivity
- Wi-Fi 2.4 GHz
News by email
Still comparing? Get what's new by email
New releases and the smart home news worth knowing, in your inbox.
No spam. Unsubscribe in one click.
| Feature | X-Sense SC07-MR Smart Smoke & CO Alarm | X-Sense Wi-Fi Smoke Alarm | Winner |
|---|---|---|---|
| Rating | 4.6 | 4.3 | X-Sense SC07-MR Smart Smoke & CO Alarm |
| Battery Life | 5 years | 10 years | X-Sense Wi-Fi Smoke Alarm |
| Connectivity | 2.4 GHz WiFi, Other | 2.4 GHz WiFi | X-Sense SC07-MR Smart Smoke & CO Alarm |
| Screen | YES | NO | X-Sense SC07-MR Smart Smoke & CO Alarm |
| Sensors | Smoke, CO | Smoke | X-Sense SC07-MR Smart Smoke & CO Alarm |
| Alerts | Fire Alerts, CO Alerts, Low Battery Alerts | Fire Alerts, Low Battery Alerts | X-Sense SC07-MR Smart Smoke & CO Alarm |
| Built-in Light | NO | YES | X-Sense Wi-Fi Smoke Alarm |
| Warranty | 5 years | 5 years | Tie |
| Integrations | Home Assistant | Home Assistant | Tie |
| Built-in Siren | YES | YES | Tie |
| Pathlight | NO | NO | Tie |
| Steam Check | NO | NO | Tie |
What the differences mean
Smoke only or smoke and CO
The X-Sense SC07-MR Smart Smoke & CO Alarm pairs a photoelectric smoke sensor with an electrochemical CO sensor and warns in the app from 100 ppm, covering the two hazards a home with gas needs. The X-Sense Wi-Fi Smoke Alarm senses smoke only and has no CO alert, so it should sit beside a separate CO alarm.
Battery span
The X-Sense Wi-Fi Smoke Alarm is rated for ten years on its CR123A cell, against five for the X-Sense SC07-MR Smart Smoke & CO Alarm, so it asks for fewer swaps over the life of the unit.
Connecting and interconnecting
The X-Sense Wi-Fi Smoke Alarm joins 2.4GHz Wi-Fi directly with no base station. The X-Sense SC07-MR Smart Smoke & CO Alarm needs an X-Sense base station for its app side, but links to other X-Sense Link+ and Link+ Pro alarms over RF so a whole house of them sounds together, a link the Wi-Fi model does not have.
Reading it on the device
The X-Sense SC07-MR Smart Smoke & CO Alarm has an LCD that shows status and the CO level without the app. The X-Sense Wi-Fi Smoke Alarm has no screen, but it does include a built-in light that the combo unit does not.
Platform support
Both are closed X-Sense devices: neither works with Alexa, Google Home, Apple HomeKit, Samsung SmartThings or Matter, and both reach Home Assistant only through community integrations. The difference is that the SC07-MR can interconnect a set on its own, while the Wi-Fi model is a standalone unit per room.
Which one to buy if
- the home runs on gas or has an attached garage
The X-Sense SC07-MR Smart Smoke & CO Alarm detects carbon monoxide too, while the X-Sense Wi-Fi Smoke Alarm does not.
- you want the alarm to last as long as possible before a battery change
The X-Sense Wi-Fi Smoke Alarm is rated for ten years on one CR123A cell, twice the X-Sense SC07-MR Smart Smoke & CO Alarm's five.
- you are fitting several detectors that should all sound together
X-Sense SC07-MR Smart Smoke & CO Alarms interconnect over RF without a base station, which the Wi-Fi model cannot do.
- you want the simplest possible connected smoke alarm
The X-Sense Wi-Fi Smoke Alarm pairs straight to 2.4GHz Wi-Fi with no base station and needs nothing else.
- you want to see the reading on the alarm itself
The X-Sense SC07-MR Smart Smoke & CO Alarm has an LCD, while the X-Sense Wi-Fi Smoke Alarm has no display.
Winner
- + Rating: 4.6
- + Connectivity: 2.4 GHz WiFi, Other
- + Screen: YES
- - Battery Life: 5 years vs 10 years
- - Built-in Light: NO vs YES
- + Battery Life: 10 years
- + Built-in Light: YES
- - Rating: 4.3 vs 4.6
- - Connectivity: 2.4 GHz WiFi vs 2.4 GHz WiFi, Other
What owners say
X-Sense Wi-Fi Smoke Alarm owners wanted a connected smoke alarm without a smart home project, and that is what they describe: download the X-Sense app, join 2.4GHz Wi-Fi, and be running in minutes with no hub. Real-time phone alerts come up often, including from rental and holiday properties where nobody is on site, and buyers consistently call the unit solidly built with a loud siren and a replaceable CR123A battery. The recurring caveats are that it detects smoke only, so carbon monoxide needs another device, that it offers no smart home integrations at all, and that it has no automatic self-test, so the button test is on the owner. A few note the app is in English only, which some households found a small hurdle.
Frequently Asked Questions
Which is better, the X-Sense SC07-MR Smart Smoke & CO Alarm or the X-Sense Wi-Fi Smoke Alarm?
The X-Sense SC07-MR Smart Smoke & CO Alarm is the more capable unit, because it detects carbon monoxide alongside smoke, shows an LCD on the device and can interconnect with other X-Sense alarms over RF. The X-Sense Wi-Fi Smoke Alarm is the simpler smoke-only option, and its advantage is a ten-year battery and a hub-free Wi-Fi setup.
Does the X-Sense Wi-Fi Smoke Alarm detect carbon monoxide?
No. It is a smoke-only alarm with no CO sensor and no CO alerts, so a separate carbon monoxide detector is required. If you want both hazards in one device, the X-Sense SC07-MR Smart Smoke & CO Alarm has a photoelectric smoke sensor and an electrochemical CO sensor together.
Do either of these X-Sense alarms need a base station?
The X-Sense Wi-Fi Smoke Alarm connects straight to 2.4GHz Wi-Fi with no base station. The X-Sense SC07-MR Smart Smoke & CO Alarm needs an X-Sense base station for Wi-Fi and the app, though its RF interconnection with other X-Sense alarms works without one.
Which X-Sense alarm has the longer battery life?
The X-Sense Wi-Fi Smoke Alarm is rated for ten years on a CR123A battery, while the X-Sense SC07-MR Smart Smoke & CO Alarm is rated for five. Both send a low battery alert before the cell needs changing.
Do these alarms work with Alexa or Google Home?
No. Neither the X-Sense SC07-MR Smart Smoke & CO Alarm nor the X-Sense Wi-Fi Smoke Alarm supports Alexa, Google Home, Apple HomeKit, Samsung SmartThings or Matter. Alerts and status live in the X-Sense app, with Home Assistant possible only through a community integration.
Who should buy the X-Sense Wi-Fi Smoke Alarm?
Anyone who wants basic connected smoke protection with phone alerts, a ten-year battery and no hub, such as a rental or a first smart alarm. Where carbon monoxide coverage or a set of alarms that sound together matters, the X-Sense SC07-MR Smart Smoke & CO Alarm is the better choice.
Our store on AmazonShop our ideas on AmazonLists of the smart home setups we would put together ourselves, ready to add to your Amazon cart.Shop on AmazonFull comparison table
Compare all 25 Smoke & CO Detectors side by side
You are looking at two of them. The full table lines up all Smoke & CO Detectors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 25 Smoke & CO Detectors
- 44 specs compared
- 41 filters
- Smoke & CO Detectors
Photoelectric Smoke Alarm
5.0(13)$49.99 - Smoke & CO Detectors
15% OFF
WiFi Smoke & CO Detector
4.7(713)€38.58€45.39 - Smoke & CO Detectors
Nest Protect (Wired)
4.6(4.6K) - Smoke & CO Detectors
15% OFFWi-Fi CO Alarm
4.6(1.5K)£30.59£35.99 - Smoke & CO Detectors
SC07-MR Smart Smoke & CO Alarm
4.6(713) - Smoke & CO Detectors
HS1SA-E Zigbee Smoke Alarm
4.6(126)£32.99 - Smoke & CO Detectors
Nest Protect (Battery)
4.4(7.5K) - Smoke & CO Detectors
Smart Smoke Detector
4.4(589)£44.99 - Smoke & CO Detectors
Smoke Alarm
4.4(550)£69.60 - Smoke & CO Detectors
XC0M-iR Smart Carbon Monoxide Alarm with Voice Alerts
4.4(150)£32.99 - Smoke & CO Detectors
Interconnected Smoke Alarm S1-R
4.4(72)$25.99 - Smoke & CO Detectors
25% OFF
Smoke Alarm E10
4.4(61)£59.99£79.99 - Smoke & CO Detectors
15% OFFSD19-MN Interconnected Smart Smoke Alarm
4.4(20)£22.09£25.99 - Smoke & CO Detectors
10% OFF
Matter Smoke Detector S1-TM
4.4(18)$44.98$49.98 - Smoke & CO Detectors
Wi-Fi Smoke Alarm
4.3(2.4K) - Smoke & CO Detectors
Smart Smoke & CO Detector with Ring
4.3(488)$69.97 - Smoke & CO Detectors
Interconnected CO Alarm C1-R
4.1(25)$29.98 - Smoke & CO Detectors
SC5 Battery Smart Smoke & CO Alarm
3.7(80) - Smoke & CO Detectors
20% OFFSmart CO Alarm
3.7(22)$47.99$59.99 - Smoke & CO Detectors
SMCO410 Smoke Detector & CO Alarm
3.6(275)$64.98
- Air Quality Monitors
20% OFFXR0A-iR Wi-Fi Radon Detector
4.4(47)$79.99$99.99 - Hubs
SBS50 Base Station
4.5(109)$29.99 - Motion Sensors
Solar Outdoor Spotlight - Motion-Sensor
4.2(53) - Smoke & CO Detectors
SC07-MR Smart Smoke & CO Alarm
4.6(713) - Smoke & CO Detectors15% OFF
SD19-MN Interconnected Smart Smoke Alarm
4.4(20)£22.09£25.99 - Smoke & CO Detectors15% OFF
Wi-Fi CO Alarm
4.6(1.5K)£30.59£35.99 - Smoke & CO Detectors
Wi-Fi Smoke Alarm
4.3(2.4K) - Smoke & CO Detectors15% OFF
WiFi Smoke & CO Detector
4.7(713)€38.58€45.39 - Smoke & CO Detectors
XC0M-iR Smart Carbon Monoxide Alarm with Voice Alerts
4.4(150)£32.99 - Smoke & CO Detectors
XP0J-iA Smart Hardwired Smoke & CO Alarm
$48.99 - Temperature & Humidity Sensors
23% OFFSmart WiFi Indoor Thermometer
4.4(164)$11.49$14.99 - Temperature & Humidity Sensors
23% OFFSTH0B Smart Thermometer Hygrometer
4.4(164)$11.49$14.99 - Water Leak Sensors
17% OFF2-in-1 Wi-Fi Water Leak & Freeze Detector
3.0(104)$14.99$17.99 - Water Leak Sensors
25% OFFWi-Fi Water Leak Detector
4.6(2.3K)$11.99$15.99