X-Sense FS51 Smart Smoke Detectors with Base Station: Immediate phone alerts on smoke detection
For homeowners who want to protect their family and property, this X-Sense smart smoke detector system offers reliable fire safety without constant worry. While many focus on basic alarms, this setup provides a connected safety net that works for you, whether you're at home or away. The base station links up to 50 devices, so you can secure every corner of your house, from the basement to the attic, with a range that covers 1,640 feet in open air.
You get immediate phone alerts when smoke is detected, and all alarms sound loudly to ensure everyone evacuates. The app lets you test alarms from your couch, avoiding ladder climbs, and monitor status like low battery warnings. For added security, the optional Protect+ plan can dispatch fire trucks in seconds after verification. It connects easily to your 2.4 GHz Wi-Fi, making it a smart choice for enhancing home security with minimal hassle.
Features
- Base station supports up to 50 devices
- Instant notifications for alarms and low battery
- Fast fire dispatch within 3 seconds with subscription
- Test alarm from app without climbing ladder
- Connect base station to Wi-Fi with one button
- Immediate phone alerts on smoke detection
General specs
- Brand: X-Sense
- Model: FS51
- Seller: Amazon
- ID: B0B1QX23QC
- Weight: <num1>, <num2>
- Material: Plastic
- Detection: Smoke
- Pack Size: 5
- Alert Type: App Notification, Audible
- Dimensions: <num_width>, <num_height>, <num_z>
- Wi-Fi Band: 2.4 GHz
- Battery Life: <num1>, <num2>
- Battery Size: AA
- Battery Type: Alkaline
- Connectivity: Wi-Fi
- Power Source: Battery
- App Ecosystem: X-Sense
- Mounting Type: Ceiling-Mounted
- Batteries Included: Yes
- Voice Assistant Compatibility: Alexa, Google Assistant
- First listed by seller: 12/6/25
If you are interested in more details, you can find full information on the seller's page.
Buy on Amazon
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Price History for seller Amazon
| Date | Price |
|---|---|
| 12/9/25 | $92.44 |
| 12/6/25 | $129.99 |
Shipping options
United States
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
X-Sense FS51 White Immediate phone alerts on smoke detection
|
X-Sense XS0B-MR61 White
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X-Sense XS0B-iR White
|
Evjeal CDR-811 Black Smart smoke detection with app alerts
|
X-Sense SC07-MR51 White App alerts for alarms and low battery
|
X-Sense XP0A-iR Real-time app notifications for alarms and faults
|
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| Brand | X-Sense | X-Sense | X-Sense | Evjeal | X-Sense | X-Sense |
| Model | FS51 | XS0B-MR61 | XS0B-iR | CDR-811 | SC07-MR51 | XP0A-iR |
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| Price | $92.44 | $169.99 | $21.98 | $23.99 | $158.55 | $31.29 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | December 9, 2025 | December 9, 2025 | December 9, 2025 | January 16, 2026 | December 9, 2025 | December 9, 2025 |
| Weight | <num1>, <num2> | 3.21 | 231 | 45.36 | 4.6 lbs | 0.70988848364 pounds |
| Material | Plastic | ABS | Plastic | |||
| Dimensions | <num_width>, <num_height>, <num_z> | 4.3, 1.3, 4.3 | 110, 110, 33 | 90, 90, 30 | ||
| Battery Type | Alkaline | CR123A | AA | Alkaline | CR123A | |
| Connectivity | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Interconnected, Wi-Fi 2.4 GHz, X-Sense Home Security App | |
| Power Source | Battery | Battery | Battery | Battery | Battery-Operated, Not AC Hardwired | |
| Batteries Included | Yes | Yes | Yes | Yes | ||
| Sensor Type | Electrochemical | Photoelectric Smoke Sensor, Electrochemical CO Sensor | ||||