---
product_id: 656034318
title: "Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 2 Pack"
brand: "kidde"
price: "€ 104.03"
currency: EUR
in_stock: true
category: "Kidde"
url: https://www.desertcart.ie/products/656034318-kidde-smoke-detector-hardwired-with-10-year-battery-backup-interconnectable
store_origin: IE
region: Ireland
---

# Interconnectable alarms 10-year battery backup 85dB loud smoke alert Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 2 Pack

**Brand:** kidde
**Price:** € 104.03
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay ahead of danger with Kidde’s 10-year peace of mind!

## Quick Answers

- **What is this?** Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 2 Pack by kidde
- **How much does it cost?** € 104.03 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/656034318-kidde-smoke-detector-hardwired-with-10-year-battery-backup-interconnectable)

## Best For

- kidde enthusiasts

## Why This Product

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

## Key Features

- • **Instant Whole-Home Alerts:** Interconnectable design ensures when one alarm sounds, all alarms alert simultaneously—maximizing escape time.
- • **Smart False Alarm Reduction:** Advanced photoelectric sensor technology minimizes nuisance alarms from cooking or steam.
- • **Clear Visual Status at a Glance:** Triple LED indicators provide real-time updates—green for normal, amber for error, red for smoke detected.
- • **Uninterrupted Safety for a Decade:** Hardwired with a 10-year lithium battery backup means zero battery swaps and continuous protection.
- • **Effortless Weekly Confidence Check:** Self-testing alarm with easy test & hush button keeps your home safe without hassle.

## Overview

The Kidde Hardwired Smoke Detector 4-pack combines cutting-edge photoelectric sensing with a 10-year lithium battery backup and interconnectivity, delivering reliable, whole-home fire safety. Designed to reduce false alarms and provide clear LED status indicators, this UL 217 9th Edition certified alarm ensures your family is alerted instantly with a loud 85-decibel siren. Easy to install and maintain, it’s the smart choice for modern, safety-conscious homes.

## Description

Help protect your home and loved ones with the Kidde 20SA10 Hardwired Smoke Detector with 10-Year Battery Backup and Interconnect Capability. This alarm detects smoke over 25% faster* and emits a loud 85-decibel alarm with a red LED light for clear visual warnings to help provide whole-home detection. Operating on 120V AC power with a built-in 10-year battery backup, this alarm helps ensure continuous detection even during power outages, eliminates low-battery chirps, and helps save up to $40 over its lifetime in battery replacements. Advanced sensing technology reduces false alarms caused by cooking or steam while maintaining fast, accurate detection when real smoke is present. The interconnect feature allows multiple Kidde alarms to sound together, helping ensure that everyone in the home is alerted to potential hazards.*** Rigorously tested to meet UL 217 10th Edition and FCC standards, this detector delivers dependable, code-compliant performance for homeowners, property managers, contractors, and safety-conscious professionals. *29% faster average smoke detection based on internal testing of smoldering wood fires for Kidde 9th Edition vs. leading competitor 8th Edition products. **10-year limited warranty on alarm. Not a battery performance claim. ***Different models offer different interconnection options and requirements. Check the User Guide for more info.

## Features

- SMOKE DETECTION: Model 20SA10 features advanced sensing technology that detects smoke over 25% faster*; sounds a loud 85-decibel alarm with red LED light for clear visual warnings; suitable for homes
- HARDWIRED WITH 10-YEAR BATTERY BACKUP: Operates on 120V AC with a built-in 10-year battery; helps provide continuous detection; saves up to $40 over the alarm’s life in battery replacements; with 10-year limited warranty** from date of purchase
- REDUCED FALSE ALARMS: Uses enhanced sensing technology that helps distinguish between real smoke and everyday cooking or steam; helps reduce false alarms while maintaining quick, accurate detection when smoke is present
- TESTED FOR SAFETY & PERFORMANCE: Rigorously tested to meet UL 217 10th Edition and FCC standards; designed to help ensure reliable performance and compliance with recognized safety requirements
- INTERCONNECT CAPABILITY: Connects with other Kidde alarms so when one detects danger, all connected units sound together; helps ensure everyone in the home is alerted to potential hazards***
- BUILT FOR HOMEOWNERS AND PROFESSIONALS: Designed for those who prioritize dependable, code-compliant detection; supports safety goals for homeowners, property managers, contractors, and professionals seeking long-term home safety assurance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DDWNH514 |
| Alarm | Smoke Alarm |
| Best Sellers Rank | #11,008 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #30 in Smoke Detectors & Fire Alarms |
| Brand | Kidde |
| Built-In Media | Mounting Hardware, Two Alarm, User Guide |
| Color | White |
| Customer Reviews | 4.1 4.1 out of 5 stars (1,118) |
| Enclosure Material | Plastic |
| Global Trade Identification Number | 00047871328642 |
| Item Dimensions D x W x H | 1.88"D x 5"W x 5"H |
| Item Type Name | Smoke Alarm |
| Item Weight | 12.8 ounces |
| Manufacturer | Kidde |
| Mfr Part Number | 21032864 |
| Model Number | 20SA10 |
| Number of Items | 1 |
| Operating Humidity | up to 95% relative humidity (RH), non-condensing |
| Power Source | Hardwired |
| Product Style | Modern |
| Sensor Type | Photoelectric |
| UPC | 047871328642 |
| Unit Count | 2.0 Count |
| Upper Temperature Rating | 100 Degrees Fahrenheit |

## Product Details

- **Alarm:** Smoke Alarm
- **Brand:** Kidde
- **Color:** White
- **Item Weight:** 12.8 ounces
- **Operating Humidity:** up to 95% relative humidity (RH), non-condensing
- **Power Source:** Hardwired
- **Product Dimensions:** 1.88"D x 5"W x 5"H
- **Sensor Type:** Photoelectric
- **Style:** Modern
- **Upper Temperature Rating:** 100 Degrees Fahrenheit

## Images

![Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 2 Pack - Image 1](https://m.media-amazon.com/images/I/71wTUdXEBXL.jpg)
![Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 2 Pack - Image 2](https://m.media-amazon.com/images/I/71cSithQCOL.jpg)
![Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 2 Pack - Image 3](https://m.media-amazon.com/images/I/71y1qOgrFFL.jpg)
![Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 2 Pack - Image 4](https://m.media-amazon.com/images/I/71CNplrr4pL.jpg)
![Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 2 Pack - Image 5](https://m.media-amazon.com/images/I/71cgg6AryaL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Frequently Bought Together

- Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack
- Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable LED Warning Light Indicators
- Kidde Quick Connect Smoke Detector Adapter Plug, Smoke Alarm Wiring Harness, Compatible with Kidde Hardwired Smoke, Carbon Monoxide, & Combination Smoke & Carbon Monoxide Detectors

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-06-13*