---
product_id: 60122921
title: "USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm with Battery Backup 2-Pack"
brand: "universal security instruments"
price: "¥1602"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/60122921-usi-electric-5304-hardwired-ionization-smoke-and-fire-alarm-battery
store_origin: JP
region: Japan
---

# Battery Backup Interconnectable Wide Temp Range USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm with Battery Backup 2-Pack

**Brand:** universal security instruments
**Price:** ¥1602
**Availability:** ✅ In Stock

## Summary

> 🔒 Safety Meets Simplicity: Your Home's Guardian!

## Quick Answers

- **What is this?** USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm with Battery Backup 2-Pack by universal security instruments
- **How much does it cost?** ¥1602 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/60122921-usi-electric-5304-hardwired-ionization-smoke-and-fire-alarm-battery)

## Best For

- universal security instruments enthusiasts

## Why This Product

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

## Key Features

- • **Seamless Integration:** Easily connects with up to 24 USI devices for a comprehensive safety network.
- • **User-Friendly Design:** Front-loading battery drawer allows for hassle-free battery replacement without removing the unit.
- • **Quick Find Technology:** Instantly identifies the first alarm in interconnected systems, ensuring swift action.
- • **Peace of Mind Warranty:** Comes with a 10-year limited warranty for your ultimate reassurance.
- • **Versatile Mounting Options:** Universal bracket fits any standard junction box, making installation a breeze.

## Overview

The USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm with Battery Backup 2-Pack offers advanced safety features, including seamless interconnectivity with up to 24 devices, user-friendly battery replacement, and a wide operational temperature range. With a 10-year limited warranty, this alarm ensures your home remains protected without compromise.

## Description

The USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm responds quickly to fast-flaming fires to protect your family against deadly threats in the home. Perfect for new or replacement installations, the 120-volt AC hardwired alarm is suitable for houses, apartments and mobile homes. This alarm is fully interconnectable with all USI and Universal 120V alarms using existing wiring and mounting. Quick Find alarm origination identifies the first alarm to sound in an interconnected system and the single silence/test button temporarily quiets nonemergency alarms. The 9-volt alkaline battery (included) provides continuous protection in the event of a power outage. This alarm also features a quick activation pull-tab and a front-loading battery drawer for replacement without removing the alarm from the bracket. Mount the bracket to any standard wiring junction box and use the large mounting base to cover imperfections in drywall. The plastic dust cover protects the alarm from debris and (2) tamper-resistant locks prevent unwanted alarm or battery removal. For maximum protection, install an alarm inside every bedroom, outside every sleeping area and on all levels of the dwelling. The USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm comes with a 10 year limited warranty. USI Electric is a subsidiary of Universal Security Instruments Inc., a U.S. based manufacturer of high quality, easy-to-install home safety products. Founded in 1969, Universal Security Instruments has nearly 50 years of heritage in providing home safety products for families. With state-of-the-art manufacturing facilities, Universal Security Instruments continues to launch revolutionary new products and technologies with the mission of always working to keep families protected.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Universal Security Instruments |
| Style | Hardwired |
| Power Source | Battery Powered,Hardwired |
| Color | white |
| Alarm | Audible |
| Sensor Type | ionization |
| Manufacturer | zuafgearse |
| Part Number | 5304-2PK |
| Item Weight | 1.26 pounds |
| Product Dimensions | 3.6 x 5.7 x 5.8 inches |
| Item model number | JJBvJ 5304 |
| Batteries | 1 9V batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 295 |
| Batteries Included? | Yes |
| Batteries Required? | No |
| Battery Cell Type | Alkaline |

## Product Details

- **Brand:** Universal Security Instruments
- **Style:** Hardwired
- **Power Source:** Battery Powered,Hardwired
- **Color:** white
- **Alarm:** Audible
- **Sensor Type:** ionization
- **Manufacturer:** zuafgearse

## Images

![USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm with Battery Backup 2-Pack - Image 1](https://m.media-amazon.com/images/I/51PXVs1ehgL.jpg)
![USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm with Battery Backup 2-Pack - Image 2](https://m.media-amazon.com/images/I/51BKdgv4zTL.jpg)
![USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm with Battery Backup 2-Pack - Image 3](https://m.media-amazon.com/images/I/51o4Eyv4GpL.jpg)
![USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm with Battery Backup 2-Pack - Image 4](https://m.media-amazon.com/images/I/61GpDHDn4XL.jpg)

## Questions & Answers

**Q: Does this use both photoelectric and ionization technology or just one of them?**
A: Personally, I use a combination of both which is recommended. Although I like the advantages of hard wired smoke detectors. But, the back-up batteries still need to be change just like a portable photoelectric kind of smoke detector. Also, I have a carbon dioxide detectors that alerts all on every floor. This being  a ionized  smoke will go well with other doctors to be well covered.

**Q: To sellers. What is the current expiration date of the smoke detectors if i buy 4 right now?**
A: If  I am not mistaken, I believe these Smoke Detectors are good for 10 to 12 years.

**Q: are these low voltage?**
A: Probably. They meet same specs as I have in my house

**Q: Does this come with 2 smoke alarms?**
A: There was an option to buy one or two when I purchased mine. I bought the 2 packs because it was cheaper and I needed several.

## Frequently Bought Together

- USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm with Battery Backup 2-Pack
- Universal Security Instruments Hardwired Ionization Smoke and Fire Alarm with Battery Backup, Model 5304
- Amazon Basics 8-Count 9 Volt Alkaline Performance All-Purpose Batteries, 5-Year Shelf Life, Packaging May Vary

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/60122921-usi-electric-5304-hardwired-ionization-smoke-and-fire-alarm-battery](https://www.desertcart.jp/products/60122921-usi-electric-5304-hardwired-ionization-smoke-and-fire-alarm-battery)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-24*