---
product_id: 622019681
title: "Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 1 Pack"
brand: "kidde"
price: "¥11348"
currency: JPY
in_stock: true
reviews_count: 5
category: "Kidde"
url: https://www.desertcart.jp/products/622019681-smoke-detector-hardwired-with-10-year-battery-backup-interconnectable-led
store_origin: JP
region: Japan
---

# Hardwired 120V AC power Interconnectable alarms 10-year battery backup Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 1 Pack

**Brand:** kidde
**Price:** ¥11348
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay safe, stay connected — the smoke detector that never quits! ⚡

## Quick Answers

- **What is this?** Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 1 Pack by kidde
- **How much does it cost?** ¥11348 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/622019681-smoke-detector-hardwired-with-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

- • **Built to Last & Comply:** UL 217 10th Edition tested for trusted, code-compliant safety
- • **Faster Smoke Detection:** Detects smoke 25% quicker to keep you ahead of danger
- • **Whole-Home Alert System:** Interconnects with other Kidde alarms so every room hears the warning
- • **Uninterrupted Protection:** Hardwired with 10-year battery backup means no downtime—even during outages
- • **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 than competitors. It includes a 10-year battery backup to ensure continuous operation during power outages, reducing maintenance costs and eliminating low-battery chirps. Its enhanced sensing reduces false alarms caused by cooking or steam, while interconnect capability allows multiple alarms to sound simultaneously for whole-home safety. Tested to meet UL 217 10th Edition and FCC standards, this 5-inch device delivers reliable, code-compliant protection ideal 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: well-designed detectors, well worth upgrading - I haven’t had these for long, but I’m impressed so far. I replaced five of my smoke and smoke/CO detectors because my 6-year-old Firex units kept chirping for no reason, even with fresh batteries. I decided to stop messing with them and swap them all out for these. Installation was straightforward—I rewired them with the new harness since the plug was different and got them all mounted. When I turned the power on, they all started beeping. Walking around, I noticed the power light was off on all but one unit. Only one had the green light on. I powered down, checked the wiring, and found the white wire had slipped out of the screw cap on the working unit. After fixing it and powering back up, everything worked perfectly. I like that it alerted me to a wiring issue. The wire must have popped out when I pushed the cap back into the box. All good and secure now. My favorite feature is the 10-year built-in battery, especially since I travel often and lose AC power regularly. Not having to change batteries is a huge plus. These are solid units—well-designed, easy to install, and smart enough to detect when something’s wrong. Five stars. UPDATE 11/25: After a year of use with NO false alarms and no chirping at 2:00am, going away for months at a time, these have worked out great for me. Worth the upgrade!
Review: Reliable safety equipment - Excellent brand smoke detector. Used it to replace one in a bedroom that had reached its ten year operating period and was not responding to the reset function. This was a hard wired detector but the installation was simple given the instructions and tools provided. It too should give us ten years of safety and service.

## 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 | B0CX6BTBWL |
| Alarm | Smoke Detector |
| Best Sellers Rank | #550 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Smoke Detectors & Fire Alarms |
| Brand | Kidde |
| Built-In Media | Alarm, Mounting Hardware, User Guide |
| Color | White |
| Customer Reviews | 4.0 4.0 out of 5 stars (1,113) |
| 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 | 9.39 ounces |
| Manufacturer | Kidde |
| Model Number | 20SA10 |
| Operating Humidity | Up to 95% relative humidity (RH), non-condensing |
| Power Source | Hardwired |
| Product Style | 9th Edition |
| Sensor Type | Photoelectric |
| UPC | 047871328635 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 100 Degrees Fahrenheit |

## Product Details

- **Alarm:** Smoke Detector
- **Brand:** Kidde
- **Color:** White
- **Item Weight:** 9.39 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:** 9th Edition
- **Upper Temperature Rating:** 100 Degrees Fahrenheit

## Images

![Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 1 Pack - Image 1](https://m.media-amazon.com/images/I/719ckatHhhL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ well-designed detectors, well worth upgrading
*by J***R on June 16, 2025*

I haven’t had these for long, but I’m impressed so far. I replaced five of my smoke and smoke/CO detectors because my 6-year-old Firex units kept chirping for no reason, even with fresh batteries. I decided to stop messing with them and swap them all out for these. Installation was straightforward—I rewired them with the new harness since the plug was different and got them all mounted. When I turned the power on, they all started beeping. Walking around, I noticed the power light was off on all but one unit. Only one had the green light on. I powered down, checked the wiring, and found the white wire had slipped out of the screw cap on the working unit. After fixing it and powering back up, everything worked perfectly. I like that it alerted me to a wiring issue. The wire must have popped out when I pushed the cap back into the box. All good and secure now. My favorite feature is the 10-year built-in battery, especially since I travel often and lose AC power regularly. Not having to change batteries is a huge plus. These are solid units—well-designed, easy to install, and smart enough to detect when something’s wrong. Five stars. UPDATE 11/25: After a year of use with NO false alarms and no chirping at 2:00am, going away for months at a time, these have worked out great for me. Worth the upgrade!

### ⭐⭐⭐⭐⭐ Reliable safety equipment
*by O***Z on September 4, 2025*

Excellent brand smoke detector. Used it to replace one in a bedroom that had reached its ten year operating period and was not responding to the reset function. This was a hard wired detector but the installation was simple given the instructions and tools provided. It too should give us ten years of safety and service.

### ⭐ 0 out of 10 - DO NOT RECOMMEND
*by B***E on October 29, 2025*

DO NOT RECOMMEND!!! I purchased this smoke detector because I have Kidde smoke detectors throughout my house and have since 2013. This appears to be the newest model and is not compatible with the older model of Kidde smoke detectors I purchased last year. Here are the issues that I had installing this smoke detector: 1. This smoke detector does not fit into the base of the older model Kidde smoke detectors. I had to change out the base in the ceiling. Normally not a big deal except the new base does not have a hole for the hardwires to fit through. I had to drill a hole into the new base to hardwire the smoke detector. 2. When attaching the new base to the ceiling, the screw holes are off from the standard junction box size and did not fit properly, had to make a new hole for those as well. Also, you cannot install this base unless you take the screws completely out of the junction box. There is no larger hole that the head of the screw can pass through with a slot to turn and lock the base in place. The old base had that, the new base for this model has a hole on one side that fits the screw and a small slot on the other side that still only fits just the screw. 3. The plug style for the hardwire is not the same either. This will require you to rewire the new hardwire plug rather than using the old Kidde plug from the previous Kidde smoke detector. 4. Once the base is modified and installed into the ceiling and the new hardwire plug is wired, the smoke detector will not fit onto the base if the hardwire plug is actually plugged into the smoke detector!!!! There is a release tab on the new plug that prevents the smoke detector from being installed onto the new base that came with the unit. I had to cut the tab off the plug that came with the unit to allow the smoke detector to be installed onto the base that came with the unit. Summary: Nothing in this smoke detector is compatible with any previous Kidde smoke detectors. In fact, NOTHING that came with this smoke detector (the base or the hardwiring plug) is compatible with anything else that also came with this smoke detector!! The base and wiring plug took a lot of modification to actually install this unit. I will NOT be purchasing a Kidde smoke detector ever again!

## Frequently Bought Together

- Kidde Hardwired Smoke Detector, 10-Year Battery Backup, 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 Japan*
*Store origin: JP*
*Last updated: 2026-04-23*