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Overview

This dual-sensor smoke and carbon monoxide alarm offers fast and reliable response. Powered by a 4.5V battery, it features low standby power consumption, an alarm level ≥85dB, a dual LCD display, and self-diagnosis and reset. It operates over a wide temperature and humidity range, helping you build a whole-home security system.

2-in-1 smoke and carbon monoxide alarm | LCD concentration display | 85dB audible and visual alarm | Battery-powered | Suitable for homes, apartments, and RVs | 3-pack

Model: GS-Sept2903
Web Code: 19480595
Sold and shipped by | 3.2 seller rating (79 reviews)

Available for deliveryAvailable online only

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Enjoy on orders from this seller.

Seller Return Policy

Warranty

Check with the manufacturer for details.

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

1. Dual sensor technology: Photoelectric smoke sensor and electrochemical carbon monoxide sensor for precise detection

2. Clear LCD display: Real-time readings of smoke and CO concentrations

3. High-decibel audible and visual alarm: ≥85dB alarm combined with red LED flashing for more effective alerts

4. Intelligent self-diagnosis and reminders: Supports one-touch testing, low-battery notification, and automatic fault detection

5. Stable and reliable design: Dust-proof and insect-proof, resistant to white light and radio frequency interference, and meets safety standards

Technical Specifications

Operating voltage: 4.5V (3 AA batteries)

Standby current: ≤15uA

Alarm current: ≤45mA

Alarm sound pressure: ≥85dB (at 1 meter in front)

CO alarm sensitivity:

70ppm | 60-180 minute alarm

150ppm | 10-50 minute alarm

400ppm | 4-15 minute alarm

Installation Guide

Recommended Locations: Bedrooms, hallways, kitchens, and landings on every floor of a home/RV

Testing and Maintenance

Daily Testing: Press and hold the test button for a few seconds to check the circuit, buzzer, and battery function.

Low Battery Warning: The buzzer will sound approximately every 30 seconds, reminding you to replace the batteries.

Package Included: Combined Smoke and CO Alarm

Product Condition
Brand New

Alarm

Colour
White - 3 piece

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 on all orders.

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*:
  • No restrictions in Canada
*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

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