X-Sense SD11-MR Smoke Alarm with SBS50 Base Station (3-Pack) for X-Sense Home Security App
Product description
The essentials
This X-Sense smoke alarm set is built around a simple idea: you get smoke detection at home, but you also want control and alerts through the X-Sense Home Security app. The SD11-MR detectors are supplied as a 3-pack, and the setup also requires the X-Sense base station (SBS50) for the system to work with the app.
On paper, the biggest draw here is app-driven reassurance. When the detectors connect through the SBS50 base station, you can receive instant notifications about incidents such as smoke/fire alarms, malfunctions, low battery and when the product reaches end of life. That’s the sort of thing you usually only discover “too late” with basic alarms—so if notifications matter to you, this setup is the point.
There’s also a comfort angle. The app includes a flexible Night Mode so the detector’s green LED doesn’t blink during your sleeping hours. Once Night Mode ends, the LED returns to its regular behaviour (blinking every 60 seconds). It’s a small detail, but it can make a difference in a hallway or bedroom.

That said, it isn’t a plug-and-play choice for everyone. You specifically need the SBS50 base station for this SD11-MR model, and the detector only supports WiFi on 2.4 GHz when paired to the base station via the app. If your home network setup is different, you may need to plan ahead before buying.
What stands out in everyday use
A good smoke alarm should be easy to test and easy to live with. This kit leans into both.
First, testing is handled via the app-based test mode, so you can try it without reaching for the detector or relying only on the manual button. In real life, that matters when the alarm is mounted in an awkward spot or you’re doing routine checks.



Second, there’s a practical family feature called “Family Sharing”. The idea is you can let household members manage the device through the X-Sense app, including push notifications, the ability to run a test, silence alerts, check status, and access alarm history. If you live with others—partner, flatmates, or family members—this is the kind of convenience that basic alarms simply don’t offer.
The Night Mode also gets a real mention. It’s designed to reduce visual disruption (no green LED blinking while in standby during that period), and then it resumes after Night Mode finishes. It’s not perfect—visual indicators can still be part of how you monitor an alarm—but this at least gives you a way to make nighttime less annoying.
Tech specs
- Name: X-Sense Smoke Alarm for Home, Base Station SBS50 Required, All-in-One Control with the X-Sense Home Security App, SD11-MR, 3-Pack
- Type: Smoke alarm system for home use with app control via required SBS50 base station
- Format: 3-pack detectors (SD11-MR) with base station requirement (SBS50)
- Connectivity note: SD11-MR only supports 2.4 GHz WiFi when connected to the SBS50 base station via the X-Sense app

Who it suits (and who should skip it)
It makes sense if you want more than just a loud alarm. This is a better fit for people who check alerts on their mobile and prefer to manage issues through an app—especially when notifications cover battery low, malfunction, and end-of-life reminders.
It also suits households where more than one person needs visibility and control. “Family Sharing” is particularly relevant if you’re the only one who usually responds to alarm events and you’d like others to be able to test, silence, and review history.
It’s not the best choice if you’re trying to keep the setup extremely minimal, or if you don’t want to rely on a smartphone app for day-to-day interaction. And if your home doesn’t have (or can’t readily use) 2.4 GHz WiFi for the SBS50 connection, you may find yourself blocked before you even get going.



It also sits more in the convenience-and-notification lane than a “set and forget” style, because the whole point is the app and the required base station.
Things to check before you buy
Before committing to this 3-pack, it’s worth confirming a few basics based on the requirements mentioned:
- You have the required SBS50 base station as part of your plan (this product description states the base station is required for SD11-MR to work with the app).
- Your WiFi environment includes 2.4 GHz support for the connection process described.
- You’re comfortable with app-based functions like silent/management, app testing, and Night Mode scheduling.

If those boxes line up, this kind of system can be a more reassuring way to handle smoke detection—particularly because you get notified about issues and end-of-life status, not just the alarm event itself.
Buying verdict
Final verdict
Buy it if you want smoke alarms that connect through a required SBS50 base station and bring incident notifications, low-battery/end-of-life reminders, app-based testing, and a Night Mode that avoids green LED blinking during the night. It’s a strong choice for people who don’t want to be surprised by maintenance issues and who value the convenience of app control and family access.



Skip it if you need a straightforward, no-app setup, or if your network setup doesn’t match the stated WiFi requirement (2.4 GHz via SBS50). It’s also not ideal if you’d rather test and manage alarms purely from the device itself without relying on the app.
Quick FAQ
Does the SD11-MR smoke alarm work without the base station?
The description states that the SD11-MR smoke detector requires the SBS50 base station for the system to connect through the app.
What kind of alerts can the app send?
When connected via the SBS50 base station, the app can send instant notifications for fire/smoke incidents, malfunctions, low battery and end-of-life of the product.
Will the alarm LED blink all night?
Night Mode is adjustable in the app. During that period, the green LED won’t blink in standby to avoid disturbing sleep. After Night Mode ends, the LED resumes blinking every 60 seconds.
Can family members control the system?
Yes, the app includes a “Family Sharing” function so household members can manage the device and receive relevant push notifications, plus test/silence and view status and alarm history.
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