---
product_id: 83301481
title: "First Alert SA320CN Dual Sensor Battery-Powered Smoke and Fire Alarm"
brand: "first alert"
price: "137 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/83301481-first-alert-sa320cn-dual-sensor-battery-powered-smoke-and-fire
store_origin: DK
region: Denmark
---

# 85 dB loud alarm 2 AA batteries included Dual sensor tech First Alert SA320CN Dual Sensor Battery-Powered Smoke and Fire Alarm

**Brand:** first alert
**Price:** 137 kr
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay ahead of danger with dual-sensor fire detection! 🚨

## Quick Answers

- **What is this?** First Alert SA320CN Dual Sensor Battery-Powered Smoke and Fire Alarm by first alert
- **How much does it cost?** 137 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/83301481-first-alert-sa320cn-dual-sensor-battery-powered-smoke-and-fire)

## Best For

- first alert enthusiasts

## Why This Product

- Trusted first alert brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Alarm Logic:** Intelligent sensing reduces false alarms, so you only get alerted when it truly matters.
- • **Trusted Durability:** Backed by a 10-year warranty, this compact unit is built to protect your home long-term.
- • **Dual Sensor Precision:** Ionization + photoelectric sensors detect both flaming and smoldering fires for unmatched safety.
- • **Powerful Audible Warning:** 85 dB alarm ensures you hear it loud and clear, giving you ample time to act.
- • **Battery-Ready Convenience:** Operates on 2 AA batteries (included) for easy, wireless installation anywhere in your home.

## Overview

The First Alert SA320CN is a compact, battery-powered smoke and fire alarm featuring dual ionization and photoelectric sensors for comprehensive fire detection. It operates on 2 AA batteries (included) and emits a loud 85 dB alarm to alert you promptly. Designed with intelligent sensing technology to minimize false alarms, it comes with a 10-year warranty, making it a reliable safety upgrade for any modern home.

## Description

Utilizes both ionization and photoelectric smoke sensors for optimal performance

## Features

- Utilizes both ionization and photoelectric smoke sensors for optimal performance
- Intelligent sensing technology reduces non-emergency or nuisance alarms
- Operates on 2 AA batteries (included)
- Detects both flaming and smoldering fires with dual sensors
- Emits a loud 85 dB alarm for ample warning
- SA320FF designates SA320CN package in Frustration Free packaging with UN2911 labels for ion smoke alarms
- Package Contents: 1 Piece Powered Smoke and Fire Alarm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00O8MVW0S |
| Alarm | Audible |
| Best Sellers Rank | #294,118 in Home Improvement ( See Top 100 in Home Improvement ) #988 in Home Security Alarms |
| Brand | First Alert |
| Built-In Media | 1 Piece Powered Smoke and Fire Alarm |
| Colour | White |
| Customer Reviews | 4.0 out of 5 stars 1 Review |
| Global Trade Identification Number | 00029054015358 |
| Item Weight | 318 g |
| Manufacturer | Jarden Safety |
| Manufacturer Warranty Description | 10 year warranty |
| Model Number | SA320FF |
| Power Source | Battery Powered |
| Product Style | Compact |
| Sensor Type | Photoelectric |
| Style | Compact |
| UPC | 029054015358 |
| Unit Count | 1.0 Count |

## Product Details

- **Alarm:** Audible
- **Brand:** First Alert
- **Colour:** White
- **Global Trade Identification Number:** 00029054015358
- **Item Weight:** 318 g
- **Manufacturer:** Jarden Safety
- **Power Source:** Battery Powered
- **Sensor Type:** Photoelectric
- **Style:** Compact
- **UPC:** 029054015358

## Images

![First Alert SA320CN Dual Sensor Battery-Powered Smoke and Fire Alarm - Image 1](https://m.media-amazon.com/images/I/61MLRUElYzL.jpg)
![First Alert SA320CN Dual Sensor Battery-Powered Smoke and Fire Alarm - Image 2](https://m.media-amazon.com/images/I/71c-Nuno3bL.jpg)
![First Alert SA320CN Dual Sensor Battery-Powered Smoke and Fire Alarm - Image 3](https://m.media-amazon.com/images/I/61UrGM2NuhL.jpg)
![First Alert SA320CN Dual Sensor Battery-Powered Smoke and Fire Alarm - Image 4](https://m.media-amazon.com/images/I/71Ot79xzeVL.jpg)
![First Alert SA320CN Dual Sensor Battery-Powered Smoke and Fire Alarm - Image 5](https://m.media-amazon.com/images/I/51e1sYRVtTL.jpg)

## Questions & Answers

**Q: I recently purchased three of these smoke alarms from Amazon. Can you tell me how high
up on the wall the alarm should be installed as I do not want to install on ceiling.  I specifically purchased these as they can be ceiling or wall mounted.
Thanks.**
A: The instructions that come with the unit duplicate what I have read from several Fire Department sources: you can place your unit on the ceiling, but AT LEAST 4 inches (10cm) from the wall.  If you want to mount it on the wall, mount it MORE THAN 4 inches (10cm) BELOW the ceiling, but NO LOWER than12 inches (30cm) below the ceiling.  It has to be high enough up the wall to "smell" the smoke, but that 4 x 4 inch (10cm x 10cm) area where the wall meets the ceiling can sometimes harbor a "dead zone" of still air where the smoke would NOT reach the detector quickly enough during a fire to warn you in time.  Thus, do NOT mount your detectors too close to where the wall meets the ceiling.

**Q: Is this detector a photoelectric or ionization type?**
A: Please check with your local authority having jurisdiction. Also you can check with NFPA online. 
Ionization smoke alarms are generally more responsive to flaming fires.
How they work: Ionization-type smoke alarms have a small amount of radioactive material between two electrically charged plates, which ionizes the air and causes current to flow between the plates. When smoke enters the chamber, it disrupts the flow of ions, thus reducing the flow of current and activating the alarm. Download this chart on ionization smoke alarms (PDF, 943 KB).

Photoelectric smoke alarms are generally more responsive to fires that begin with a long period of smoldering (called “smoldering fires”).
How they work: Photoelectric-type alarms aim a light source into a sensing chamber at an angle away from the sensor. Smoke enters the chamber, reflecting light onto the light sensor; triggering the alarm. Download this chart on photoelectric smoke alarms (PDF, 782 KB).

**Q: Does the unit beep to tell you that the battery is running low?**
A: The beep is effective. It always seems to start in the middle of the night. I twist the unit off the ceiling and do a battery swap and have it back on the ceiling in less than a minute, craw back into bed before really waking up. It's not a pain to replace the batteries, it's very easy. Simply slide the tray out and pop new ones in. The batteries fit snuggly in the compartment and there are tabs that allow you to push the batteries out by applying pressure with your thumbs from the back side. There is an optional screw hole to make the battery compartment tamper resistant. This prevents people from easily taking the batteries to power their remote controls or whatever. When fire marshals inspect fire related deaths it's not uncommon to find the smoke and fire detectors had no batteries installed. This simple, optional, screw might seem like "a pain" to some people, but it's an easy way to save your life. This is a great unit. I have 6 in my house and I highly recommend them to everyone.

**Q: 5 or 10 year warranty? Picture & Description say 10, Features says 5.**
A: Package says 10 year limited warranty.  It's cheap, easy to install.  This is my second one. Had first one for 8 years.

## Frequently Bought Together

- First Alert SA320FF Dual-Sensor Smoke and Fire Alarm, Battery Powered, Frustration-Free Packaging, White , 1 Pack
- First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup , White
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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-26*