Skip to main contentSkip to footer
Slide 1 of 2

Overview

• The SD-525BL is a Smoke alarm device. It detects the ambient smoke concentration, when the ambient smoke concentration reaches the alarm threshold, the product will send an alarm signal.• The product is designed with mute and no-disturbance functions. It is operated by DC3V (built-in) battery, and will give a warning when low battery. The product has a sensor fault detection function that warns when a smoke chamber sensor fails.

SFS Photoelectric Smoke Alarm

Model: SD-525BL
Web Code: 20227468
Sold and shipped by

Available for deliveryAvailable online only

Delivery times vary by location. Most Marketplace items leave sellers' locations within 2 business days. Allow additional time for shipping.

Seller Return Policy

Read return policy

Warranty Information

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

What's included:

  • SD-525BL Smoke Alarm and Installation Manual

- Photoelectric smoke detection: The SFS SD-525BL monitors ambient smoke and activates an alarm when smoke reaches its detection threshold.

- Long-life battery power: Operates on a built-in 3V lithium battery, with a specified 10-year battery and product life; no AC power connection is required.

- Audible and visual warnings: Delivers an 85 dB(A) alarm at 10 feet, with a repeating three-beep pattern and synchronized red LED flashes.

- Convenient testing: Integrated TEST/SILENCE button supports weekly verification of alarm operation.

- Temporary alarm silence: Mutes the smoke alarm for approximately eight minutes, with a red LED indicating silence mode.

- Low-battery and fault monitoring: Distinct chirp patterns identify low battery and smoke-sensor errors; either condition requires replacement of the complete unit.

- Warning silence functions: Temporarily silences low-battery warnings for approximately 10 hours and sensor-fault warnings for approximately eight hours.

- End-of-life notification: Alerts users when replacement is required. The warning can be muted for approximately eight hours at a time during the first 30 days after it begins.

- Compact white housing: Features polycarbonate construction with a V-2 flame-retardant rating and an approximate weight of 155 g, including the battery.

- Certification and standards: The datasheet identifies ETL as the certification authority and lists UL 217, 10th Edition, and CAN/ULC S531:2019, 4th Edition.

- Included accessories: Instruction manual, mounting bracket, and screw pack. Confirm dimensions and magnetic accessory availability before publishing, as the datasheet contains conflicting details.

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

Free standard shipping may be available on orders over a minimum amount (before taxes, fees, and promo codes). Shipping charges may vary based on item size and your shipping address. Want a shipping charge estimate? Simply add an item to your cart, then access the cart and enter your postal code in the shipping estimate section.

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • British Columbia (Remote)
  • Alberta (Remote)
  • Saskatchewan (Remote)
  • Manitoba (Remote)
  • Ontario (Remote)
  • Quebec (Remote)
  • New Brunswick (Remote)
  • Nova Scotia (Remote)
  • Prince Edward Island (Remote)
  • Newfoundland and Labrador (Remote)
  • Yukon
  • Northwest Territories
  • Nunavut
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
Product Category
Smart home products
Return/Exchange Period
30 days
Condition
Opened

Learn more about returning a Marketplace product