---
product_id: 656034318
title: "Kidde Smoke Detector, Hardwired & 10-Year Battery Backup, 20SA10, 2 Pack"
brand: "kidde"
price: "91.27 DT"
currency: TND
in_stock: false
reviews_count: 8
url: https://www.desertcart.tn/products/656034318-kidde-smoke-detector-hardwired-and-10-year-battery-backup-20sa10
store_origin: TN
region: Tunisia
---

# Hardwired 120V AC power Interconnects multiple alarms 10-year battery backup Kidde Smoke Detector, Hardwired & 10-Year Battery Backup, 20SA10, 2 Pack

**Brand:** kidde
**Price:** 91.27 DT
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Stay ahead of danger with Kidde’s 10-year worry-free smoke detection! 🚨

## Quick Answers

- **What is this?** Kidde Smoke Detector, Hardwired & 10-Year Battery Backup, 20SA10, 2 Pack by kidde
- **How much does it cost?** 91.27 DT with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/656034318-kidde-smoke-detector-hardwired-and-10-year-battery-backup-20sa10)

## 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

- • **Faster Smoke Detection:** Detects smoke 25% faster for early alerts
- • **Maintenance-Free Power:** Hardwired with a decade-long battery backup—no battery swaps or chirps
- • **Whole-Home Safety Sync:** Interconnect capability ensures all alarms sound together for maximum awareness
- • **Certified & Code-Compliant:** Meets UL 217 10th Edition & FCC standards for trusted performance
- • **Smart False Alarm Reduction:** Advanced sensing tech cuts false alarms from cooking or steam

## Overview

The Kidde 20SA10 is a hardwired smoke detector featuring advanced photoelectric sensing technology that detects smoke 25% faster. It includes a 10-year battery backup to ensure continuous protection during power outages, reducing maintenance and saving costs. Designed to minimize false alarms, it interconnects with other Kidde alarms to alert your entire home simultaneously. Tested to meet rigorous UL and FCC safety standards, this detector offers reliable, code-compliant fire safety for homeowners and professionals alike.

## 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.

Review: Reliable Hardwired Smoke Detector With Long Lasting 10 Year Backup Battery - These smoke detectors work exactly as expected and integrate well into a hardwired system. The installation process was straightforward, and the interconnect feature adds an extra level of safety by ensuring all units alarm together. The LED indicators are clear and make it easy to confirm normal operation at a glance. The standout feature is the 10 year backup battery. Not having to replace batteries or worry about chirping alarms for a decade is a major advantage and reduces ongoing maintenance. For anyone upgrading or replacing hardwired smoke detectors, this two pack offers dependable performance and long term convenience at a reasonable cost.
Review: Smoke Detectors Must Be Changed Every 10 Years! Make it count! - I just found out that smoke detectors must be changed every 10 years. My old Kidde hardwired smoke detectors have been working perfectly for 15 years, no false chirps or beeps. I do change the 9V battery every year which really helps. But even with maintenance, the parts can fail and render the smoke detectors inoperable and inaccurate. Your insurance company might also refuse or reduce your payout in the event of a fire if you have old detectors. My search for replacements was pretty easy since Kidde is well known and well respected, and I've had no issues with them for the past 15 years. I purchased the hardwired interconnectable version with the 10-year battery backup. The thought of not having to change the 9V batteries each year and not climb up and down ladders was a huge motivator. The entire process of taking down the old smoke detector pictured on the right and putting up the new one on the left took a few minutes for each unit. Even though it's essentially the same company and detector, they did change the plug and mounting bracket. Although the mounting bracket looks the same, the new one is much thinner, and the new smoke detector will not fit on the old mounting bracket. To make it even easier, I also purchased the Kidde adapter so I didn't need to rewire any of the units with the new plug. So I took down the old unit, took down the old mounting bracket by loosening two screws, installed the new mounting bracket, and installed the new smoke detector with the new plug adapter. Again, about 2 minutes for each unit. I did read the instructions and did follow them. The one note to save you time and trouble is to make sure you activate the battery BEFORE you plug the unit into the wiring harness. You will hear a beep when you activate the battery either by mounting it to the bracket, which I did before I installed the bracket on the ceiling, or with a screw driver prior to mounting it to the bracket. After you hear the beep, then plug it in and mount it to the bracket. If you're looking for an easy replacement for your hardwired, interconnectable smoke detectors that require no maintenance for 10 years, this is the one!

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

## 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 & 10-Year Battery Backup, 20SA10, 2 Pack - Image 1](https://m.media-amazon.com/images/I/71wTUdXEBXL.jpg)
![Kidde Smoke Detector, Hardwired & 10-Year Battery Backup, 20SA10, 2 Pack - Image 2](https://m.media-amazon.com/images/I/71cSithQCOL.jpg)
![Kidde Smoke Detector, Hardwired & 10-Year Battery Backup, 20SA10, 2 Pack - Image 3](https://m.media-amazon.com/images/I/71y1qOgrFFL.jpg)
![Kidde Smoke Detector, Hardwired & 10-Year Battery Backup, 20SA10, 2 Pack - Image 4](https://m.media-amazon.com/images/I/71CNplrr4pL.jpg)
![Kidde Smoke Detector, Hardwired & 10-Year Battery Backup, 20SA10, 2 Pack - Image 5](https://m.media-amazon.com/images/I/71cgg6AryaL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable Hardwired Smoke Detector With Long Lasting 10 Year Backup Battery
*by M***I on December 27, 2025*

These smoke detectors work exactly as expected and integrate well into a hardwired system. The installation process was straightforward, and the interconnect feature adds an extra level of safety by ensuring all units alarm together. The LED indicators are clear and make it easy to confirm normal operation at a glance. The standout feature is the 10 year backup battery. Not having to replace batteries or worry about chirping alarms for a decade is a major advantage and reduces ongoing maintenance. For anyone upgrading or replacing hardwired smoke detectors, this two pack offers dependable performance and long term convenience at a reasonable cost.

### ⭐⭐⭐⭐⭐ Smoke Detectors Must Be Changed Every 10 Years! Make it count!
*by B***K on December 31, 2025*

I just found out that smoke detectors must be changed every 10 years. My old Kidde hardwired smoke detectors have been working perfectly for 15 years, no false chirps or beeps. I do change the 9V battery every year which really helps. But even with maintenance, the parts can fail and render the smoke detectors inoperable and inaccurate. Your insurance company might also refuse or reduce your payout in the event of a fire if you have old detectors. My search for replacements was pretty easy since Kidde is well known and well respected, and I've had no issues with them for the past 15 years. I purchased the hardwired interconnectable version with the 10-year battery backup. The thought of not having to change the 9V batteries each year and not climb up and down ladders was a huge motivator. The entire process of taking down the old smoke detector pictured on the right and putting up the new one on the left took a few minutes for each unit. Even though it's essentially the same company and detector, they did change the plug and mounting bracket. Although the mounting bracket looks the same, the new one is much thinner, and the new smoke detector will not fit on the old mounting bracket. To make it even easier, I also purchased the Kidde adapter so I didn't need to rewire any of the units with the new plug. So I took down the old unit, took down the old mounting bracket by loosening two screws, installed the new mounting bracket, and installed the new smoke detector with the new plug adapter. Again, about 2 minutes for each unit. I did read the instructions and did follow them. The one note to save you time and trouble is to make sure you activate the battery BEFORE you plug the unit into the wiring harness. You will hear a beep when you activate the battery either by mounting it to the bracket, which I did before I installed the bracket on the ceiling, or with a screw driver prior to mounting it to the bracket. After you hear the beep, then plug it in and mount it to the bracket. If you're looking for an easy replacement for your hardwired, interconnectable smoke detectors that require no maintenance for 10 years, this is the one!

### ⭐ Too many nuisance alarms
*by E***S on June 13, 2025*

I researched, purchased, and installed. I want the best for my family and didn't want to deal with those pesky low battery alarms that plagued our last set of smoke detectors. Everything installed great, and I almost forgot about them (seen and not heard sort of thing--as it should be) until last month. While the kids were at school, the detector in my son's room alarmed, setting-off the whole house (while my wife is working from home). Nothing seems to have caused it. I reset it. Two days later, it happened again during the day while I was there. No amount of beeps and lights and internet searching could tell me what was wrong. I called customer service, because one of my kids is on the spectrum and sometimes has sleep issues. Customer service says that it could be dust or a tiny spider and to use compressed air to blow it out. Done. Hopefully, the problem is solved. Nope. A week later the living room detector alarmed. Thankfully during the day. Fast forward to about 10 days ago. Some time after midnight, every detector in the house is alarming due to the garage detector going off. With chest pains from being violently awakened in the night, I removed the garage detector, blew it out with the air compressor, reset it, and left it disconnected on the freezer for tomorrow. Thinking that some dust from shipping must be on all of them, I resigned myself to cleaning them all tomorrow. After some breathing exercises to help flush the adrenaline out my system, I was able to go back to sleep. I thank God that my son seemed to sleep through it. Unfortunately, it happened again about five nights later at about 1am. Same adrenaline rush, same chest pains. I'm writing now because it just happened again around 7pm this evening with the detector in my son's room. Third time with this one, sixth time across three different detectors overall. I was just considering replacing the garage detector with an ion type (these are photo-electric, I think), but now I'm not so sure. I spent over $200 on these for their high rating and ten-year sealed battery, but the low-battery chirp a few times over ten years is starting to look mighty attractive rather than regular, random nuisance alarms.

## 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 Tunisia*
*Store origin: TN*
*Last updated: 2026-08-16*