---
product_id: 656034318
title: "Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack"
brand: "kidde"
price: "76 zł"
currency: PLN
in_stock: false
reviews_count: 8
url: https://www.desertcart.pl/products/656034318-kidde-hardwired-smoke-detector-10-year-battery-backup-interconnectable-led
store_origin: PL
region: Poland
---

# Interconnectable alarms 10-year battery backup 85dB loud smoke alert Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack

**Brand:** kidde
**Price:** 76 zł
**Availability:** ❌ Out of Stock

## Summary

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

## Quick Answers

- **What is this?** Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack by kidde
- **How much does it cost?** 76 zł with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/656034318-kidde-hardwired-smoke-detector-10-year-battery-backup-interconnectable-led)

## 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

Experience the next level of fire safety with the Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack, model 20SA10. This smoke detector has enhanced sensing technology that reduces false alarms often caused by cooking and sends fast alerts that help give your family more time to get out safely. Plus, it is interconnected so when one alarm sounds, they all do so you never miss an emergency (see user guide for compatibility with other Kidde models). This alarm offers a modern 5-inch design ideal for all living spaces such as living rooms, hallways, kitchens, & bedrooms. Comprehensively tested and designed to the latest UL standard for safety and reliability, the 5-inch smoke alarm is powered by 120V AC wiring with a 10-year built-in lithium battery, so you never have to change a battery for the life of the detector (not a battery performance claim). In addition, the detector is self-testing and easy to install with the included twist-and-click mounting bracket. Meets requirements of 9th Edition UL 217, FCC, and CSFM.

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 - Easy to install if replacing existing smoke alarms and no batteries to replace. No more annoying battery chirps in the middle of the night.

## Features

- DETECTS SMOKE: Sounds a loud 85-decibel alarm when smoke is detected - 3 long beeps with red LED light flashing in time, repeating.
- HARDWIRED & 10-YEAR BATTERY BACKUP: Operates on 120V AC wiring (installed in the ceiling). No battery changes for 10 years & saves up to $40 over the life of the detector.
- ENHANCED SENSING TECHNOLOGY: Reduces false alarms often caused by cooking. Comprehensively tested to meet the latest UL standards, meets UL 217 9th Edition & FCC standards.
- SELF-TESTING ALARM: Internal components ensure alarm is always operating as expected. Not a substitute for a manual push test, perform a button test once per week to verify alarm operation.
- INTERCONNECT CAPABILITY: When one alarm sounds, they all sound, so you can get out faster. (Different models offer different interconnection options and requirements. See User Guide for more info.)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DDW2K42G |
| Alarm | Smoke Alarm |
| Best Sellers Rank | #14,539 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #28 in Smoke Detectors & Fire Alarms |
| Brand | Kidde |
| Built-In Media | Four Alarms, Mounting Hardware, User Guide |
| Color | White |
| Customer Reviews | 4.1 out of 5 stars 1,080 Reviews |
| Enclosure Material | Plastic |
| 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 | 21032865 |
| Model Number | 20SA10 |
| Number of Items | 1 |
| Operating Humidity | up to 95% relative humidity (RH), non-condensing |
| Power Source | Hardwired |
| Product Dimensions | 1.88"D x 5"W x 5"H |
| Product Style | Modern |
| Sensor Type | Photoelectric |
| Style | Modern |
| UPC | 047871328659 |
| Unit Count | 4.0 Count |
| Upper Temperature Rating | 100 Degrees Fahrenheit |

## Product Details

- **Brand:** Kidde
- **Style:** Modern
- **Power Source:** Hardwired
- **Color:** White
- **Product Dimensions:** 1.88"D x 5"W x 5"H
- **Item Weight:** 0.8 Pounds
- **Alarm:** Smoke Alarm
- **Operating Humidity:** up to 95% relative humidity (RH), non-condensing
- **Upper Temperature Rating:** 100 Degrees Fahrenheit
- **Sensor Type:** Photoelectric

## Images

![Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack - Image 1](https://m.media-amazon.com/images/I/71JRYKHJ7OL.jpg)
![Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack - Image 2](https://m.media-amazon.com/images/I/71cSithQCOL.jpg)
![Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack - Image 3](https://m.media-amazon.com/images/I/71y1qOgrFFL.jpg)
![Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack - Image 4](https://m.media-amazon.com/images/I/71CNplrr4pL.jpg)
![Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 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
*by A***R on March 8, 2026*

Easy to install if replacing existing smoke alarms and no batteries to replace. No more annoying battery chirps in the middle of the night.

### ⭐⭐⭐⭐⭐ 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!

## Frequently Bought Together

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-05-08*