---
product_id: 27127585
title: "21007588 Hardwired Interconnectable 120-Volt Smoke Alarm with Battery Backup, 4-Pack"
brand: "kidde"
price: "S$367"
currency: SGD
in_stock: true
reviews_count: 8
url: https://www.desertcart.sg/products/27127585-21007588-hardwired-interconnectable-120-volt-smoke-alarm-with-battery-backup
store_origin: SG
region: Singapore
---

# 120V hardwired power 9V battery backup Interconnectable 4-pack 21007588 Hardwired Interconnectable 120-Volt Smoke Alarm with Battery Backup, 4-Pack

**Brand:** kidde
**Price:** S$367
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay ahead of danger with smart, connected protection! 🔗

## Quick Answers

- **What is this?** 21007588 Hardwired Interconnectable 120-Volt Smoke Alarm with Battery Backup, 4-Pack by kidde
- **How much does it cost?** S$367 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/27127585-21007588-hardwired-interconnectable-120-volt-smoke-alarm-with-battery-backup)

## 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

- • **Durable Sensor Protection:** Dust cover shields internal sensors from airborne contaminants, ensuring long-lasting accuracy.
- • **Seamless Home Integration:** Interconnectable design means all alarms sound simultaneously for instant alerts.
- • **Smart False Alarm Control:** Hush button silences nuisance alarms without compromising safety.
- • **Uninterrupted Fire Safety:** Hardwired 120V power with 9V battery backup keeps you protected even during outages.
- • **Effortless Reliability Check:** Test button lets you verify alarm functionality in seconds—no surprises.

## Overview

The Kidde 21007588 Hardwired Smoke Alarm 4-Pack combines reliable ionization smoke and heat detection with a 120-volt hardwired power source and 9V battery backup for continuous protection. Its interconnectable feature ensures all alarms sound simultaneously, while the hush and test buttons provide user-friendly control. Designed with a dust cover to protect sensors, this pack offers durable, professional-grade fire safety for modern homes.

## Description

The Walter Kidde Hardwire Smoke Alarms (4-Pack) alert you to potential fire dangers by detecting the presence of smoke and heat in the atmosphere. These alarms are equipped with 2 pre-stripped wires for easy installation and have a 9 Volt battery backup to ensure continued use during a power failure. The alarms feature a dust cover that protects the internal sensor from airborne contaminates that may take flight during a fire or a construction job.

## Features

- Detects smoke and heat for reliable protection against fire
- Hush alarm control button silences false alarms
- Test button allows you to check functionality without sounding the full alarm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Alarm | Audible |
| Asin | B00L4BQC8I |
| Best Sellers Rank | #63,874 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #93 in Smoke Detectors & Fire Alarms |
| Brand | Kidde |
| Color | red |
| Customer Reviews | 4.6 4.6 out of 5 stars (238) 4.6 out of 5 stars |
| Global Trade Identification Number | 00047871075881 |
| Item Type Name | Smoke alarm |
| Item Weight | 2.4 pounds |
| Manufacturer | Kidde |
| Mfr Part Number | 21007588 |
| Model Number | 21007588 |
| Number Of Items | 1 |
| Power Source | Battery Powered, Corded Electric |
| Product Style | Classic |
| Sensor Type | Ionization |
| Unit Count | 4 Count |
| Upc | 047871075881 |

## Product Details

- **Alarm:** Audible
- **Brand:** Kidde
- **Color:** red
- **Global Trade Identification Number:** 00047871075881
- **Item Weight:** 2.4 pounds
- **Number of Items:** 1
- **Power Source:** Battery Powered, Corded Electric
- **Sensor Type:** Ionization
- **Style:** Classic
- **Unit Count:** 4 Count

## Images

![21007588 Hardwired Interconnectable 120-Volt Smoke Alarm with Battery Backup, 4-Pack - Image 1](https://m.media-amazon.com/images/I/61PpKckUESL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Classic product
*by  on Reviewed in the United States May 2, 2026*

Hard to find item. Simple to install. They all work great.

### ⭐⭐⭐⭐⭐ Replacement of dated detectors.
*by  on Reviewed in the United States July 7, 2026*

Easily installed with multiple hook up adapters.Didn’t work for me as I had to make new connections due to the compatibility of the old detectors but at least they tried.

### ⭐⭐⭐⭐⭐ Good product
*by  on Reviewed in the United States June 10, 2026*

Good product

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**Shop now:** [https://www.desertcart.sg/products/27127585-21007588-hardwired-interconnectable-120-volt-smoke-alarm-with-battery-backup](https://www.desertcart.sg/products/27127585-21007588-hardwired-interconnectable-120-volt-smoke-alarm-with-battery-backup)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-09-13*