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Item #:
138151805
First Alert Hardwire Smoke Alarm, Dual Sensor | SM300, AA Battery Backup
Item #:
138151805
ANG 110
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
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Order now and get it around Sunday, August 16
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Precision Detection advanced sensing technology reduces cooking nuisance alarms and delivers early warning.
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What Stands Out
Dual Sensor Technology
This smoke alarm combines photoelectric and ionization sensors, providing comprehensive detection for both smoldering and flaming fires, ensuring faster response and greater safety for your home.
Battery Backup
Equipped with a reliable battery backup, the smoke alarm ensures continuous operation during power outages, giving you peace of mind and protection at all times.
Hardwired Connectivity
With hardwired installation, this device ensures a stable power supply and allows interconnection with other alarms, enhancing safety by alerting all units in the event of smoke detection.
Product Details
- First Alert's Precision Detection advanced sensing technology reduces cooking nuisance alarms and delivers early warning
- Dual smoke sensor technology provides optimal protection for both smoldering and fast flaming fires
- Interconnects with most First Alert and BRK alarms so when one sounds, all compatible alarms sound to provide an early warning
- Latching Alarm Indicator visually identifies the unit that initiated the alarm or low battery warning. Battery backup provides continuous protection during power outages.
- Test/Silence button allows for efficient testing and temporarily silences alarm for up to 8 hours
| Power Source | Corded Electric |
| Alarm | Audible |
| Product Style | Precision Detection |
| Color | White |
| Item Dimensions D x W x H | 6.75"D x 3.75"W x 7.38"H (17.1 x 9.5 x 18.7 cm) |
| Item Weight | 0.45 kg |
| Brand | First Alert |
| Model Number | FSM300AC1PK |
| Number of Items | 1 |
| Manufacturer | First Alert |
| UPC | 194160015810 |
| Built-In Media | Alarm |
| Item Type Name | Smoke Alarm |
| Mfr Part Number | FSM300AC1PK |
| Style | Precision Detection |
| Product Dimensions (L x W x H) | 6.75"D x 3.75"W x 7.38"H (17.1 x 9.5 x 18.7 cm) |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Who Should Buy?
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Homeowners
Ideal for homeowners seeking enhanced safety with interconnected alarms and reliable battery backup for emergencies.
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Families with Children
Perfect for families wanting extra safety measures to ensure quick alerts in case of smoke or fire.
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Landlords
Great for landlords needing a reliable smoke alarm solution to meet tenant safety standards and regulations.
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Budget Shoppers
Not suitable for those looking for the cheapest smoke alarm options, as this model is more advanced and pricier.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What are the features of the First Alert SM300-AC smoke alarm?
Answer: The First Alert SM300-AC features a dual sensor system that combines both photoelectric and ionization elements, providing enhanced detection for both smoldering and flaming fires. This interconnectable smoke alarm can be wired directly into your home’s electrical system and includes a battery backup that ensures its functionality during power outages. Additionally, it boasts a silencing feature to prevent false alarms, making it perfect for use in kitchens or near bathrooms. -
Question:
How does the battery backup work?
Answer: The battery backup in the First Alert SM300-AC is designed to keep the smoke alarm operational even during a power outage. This feature ensures that families remain protected regardless of external conditions. The battery compartment is easily accessible for swift battery replacement, allowing you to maintain peak performance and protection in your home. You can rely on this smoke alarm to function effectively, ensuring safety in critical situations. -
Question:
Can multiple SM300-AC alarms be interconnected?
Answer: Yes, the First Alert SM300-AC allows interconnection with up to 18 other compatible smoke alarms. This feature ensures that if one alarm detects smoke, all interconnected units will activate, providing an audible alert throughout your home. This interconnected system is especially beneficial in larger spaces or multi-level homes, as it enhances safety by ensuring that alarms are heard from any location. -
Question:
Where is the best location to install the SM300-AC smoke alarm?
Answer: For optimal performance, install the First Alert SM300-AC smoke alarm in areas where fires are most likely to start, such as bedrooms, hallways, and living areas. Additionally, it’s advisable to keep smoke alarms away from cooking appliances to reduce false alarms and ensure reliable detection. Mounting them on the ceiling or high on the wall can significantly improve airflow to the sensor, enhancing its responsiveness. -
Question:
How often should I test the smoke alarm?
Answer: It is recommended to test the First Alert SM300-AC smoke alarm at least once a month. This simple process ensures that the devices are functioning correctly. You can easily press the test button to confirm operation. Regular testing helps maintain your family’s safety by identifying any potential malfunctions promptly, allowing you to address issues before they pose a risk. -
Question:
What makes the dual sensor technology advantageous?
Answer: The dual sensor technology of the First Alert SM300-AC effectively combines photoelectric and ionization sensors, allowing it to detect various types of fires more accurately. Photoelectric sensors are excellent for detecting slow-burning fires, while ionization sensors respond faster to fast-flaming fires. This blend ensures comprehensive protection and minimizes false alarms, making it a reliable choice for safeguarding your home. -
Question:
What should I do if the alarm starts beeping?
Answer: If the First Alert SM300-AC starts beeping, it typically indicates a low battery or the need for maintenance. A chirping sound generally signifies that the battery needs replacement, while continuous beeping can suggest smoke detection. If you hear this sound, you should investigate your home for potential smoke or fire hazards, and if none are present, check and replace the batteries to ensure continued safety. -
Question:
Are there any maintenance tips for the SM300-AC smoke alarm?
Answer: To maintain your First Alert SM300-AC smoke alarm effectively, regularly dust the exterior with a soft cloth or vacuum the vents to prevent dust buildup. Test the unit each month to ensure it’s operational and replace the batteries at least once a year. Keep a note of the manufacturing date on the back of the unit and replace the entire smoke alarm every 10 years, as sensors can degrade over time. -
Question:
Is the First Alert SM300-AC suitable for commercial use?
Answer: While the First Alert SM300-AC is primarily designed for residential use, it can be suitable for certain light commercial applications where low traffic and minimal fire risks exist. However, for higher risk commercial settings, a more robust fire detection system may be advisable. Always check local codes and regulations to ensure compliance with specific fire safety requirements. -
Question:
Where can I buy the First Alert SM300-AC in Sint Maarten?
Answer: You can purchase the First Alert SM300-AC, Interconnect Hardwire Dual Sensor Smoke Alarm with Battery Backup, 1-Pack, from Ubuy. Ubuy offers a diverse selection of home safety products, including smoke alarms, ensuring you find the right solution for your needs. With Ubuy, you can conveniently shop online and choose this reliable smoke alarm to enhance your household safety.
First Alert Smoke Detectors & Fire Alarms FSM300AC1PK Editorial Review
The First Alert SM300-AC Interconnect Hardwire Dual Sensor Smoke Alarm with Battery Backup has received generally positive feedback from customers who appreciate its functionality and ease of installation. Many users highlighted its capability as a modern replacement for older smoke detectors, specifically pointing out its dual sensor technology that enhances safety by effectively detecting both smoldering and fast-flaming fires. This feature is particularly praised for reducing nuisance alarms, a common issue with aging detectors. Customers were pleased with how well the SM300-AC worked with existing connections and mounting brackets, allowing for a straightforward plug-and-play installation. However, while the product was generally well-received, some customers expressed disappointment in the inConsistency of included installation aids, such as wiring adapters, which only came with single packs rather than multi-packs. This omission slightly affected satisfaction scores, with one customer noting it as the reason for giving a four-star review instead of five. Another aspect of the customer experience detailed some concerns about the packaging, suggesting doubts about product legitimacy upon opening. Yet, those worries were quickly alleviated once the product was installed, reaffirming its functionality. Overall, the First Alert SM300-AC appears to be a reliable and effective smoke detection solution, delivering peace of mind for homeowners looking to update their fire safety systems without hassle. **
Customer Reviews & Ratings
42 customers ratings
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5 Star
64%
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4 Star
21%
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3 Star
5%
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2 Star
8%
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1 Star
2%
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Pros
- Easy installation with compatibility to existing mounts.
- Dual sensor technology reduces nuisance alarms.
- Effective detection for both smoldering and fast-flaming fires.
- Good price point compared to competitors.
- Comes with batteries for immediate use.
- Positive feedback on performance and reliability.
Cons
- InConsistent inclusion of wiring adapters in multi-packs.
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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ANG 110
Order now and get it around Sunday, August 16
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Features & Benefits
- Advanced sensing technology minimizes false alarms from cooking.
- Dual smoke sensor technology optimally detects smoldering and fast flaming fires.
- Interconnects with most First Alert and BRK alarms for comprehensive alerting.
- Latching Alarm Indicator shows which unit triggered the alarm or low battery.
- Battery backup ensures protection during power outages.
- Test/Silence button allows for easy testing and temporary silence of the alarm.
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