Ionization Sensor - Smoke/Fire Alarm - Hardwired 120V With 9V Battery Backup

18 Reviews
SKU: USI-5304
Brand: USI
Mfr Part Number: USI-5304

Only available for Shipping

15 Available

In Stock

Current Stock: 15


Perfect for new or replacement installations, this 120 volt AC/DC hardwired smoke and fire alarm offers time-saving installation features, value and quality. This alarm is fully interconnectable with all USI and Universal brand alarms.

  • Quick Find® alarm origination feature
  • Quick activation battery pull tab
  • Universal mounting bracket
  • Quick connect wiring harness
  • Larger mounting base
  • Interconnectable
  • Front-load battery drawer
  • Single silence/test button
  • Full-size plastic dust cover
  • 2 tamper resistant locking features

Brochures & Spec Sheets

Spec SheetUSI USI-5304 SpecsDocumentationUSI USI-5304 Manual

Electrical & Operational Information

Operating Temperature40°F - 100°F


Alarm TypeSmoke/FireHousing MaterialThermoplastic
Humidity Range5% - 95%Sensor TechnologyIonization

Included Components

Emergency Battery Includedyes

Warranty & Certifications

CertificationsNFPA, CSFMUL Listedyes

Dimensions & Measurements

Product Length (in.)1.75Product Width (in.)5.63
Product Height (in.)5.63

Ratings & Reviews

18 reviews

  • 4 stars
  • 0 reviews
  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

On time

by -

On time


by -

Although it was supposed to be a direct replacement, I had to replace the wire connectors. The old ones kept popping off and would not stay seated. The ones that came with the new alarms fit tighter. Still a very good replacement product. My false alarm chirps have ended.

Pleasant Experience from beginning to end...

by -

Couldn't ask for more. First, they have a helpful website that described the product well. User friendly and easy to place an order. Good prices. It arrived on time. Happy with experience and look forward to ordering from them again.


by -

The product was a direct replacement for my smoke fire alarms, had to speak with them on phone prior order, it was simple. The product sent was brand new with zero issues.


by -

Works perfect.

smoke/fire alarm

by -

They are serving their purpose. I will absolutely recommend anyone to beeslighting for any electrical needs. Thanks.

Fast & efficient service

by -

Thank you for fast delivery! The most cost-effective way to replace a set of smoke detectors to get to code.

Great Site and Service

by -

Great Site and Service

USI, Ionization Sensor Smoke/Fire Alarm, 120V, w/B

by -

Very prompt shipping upon placing the order. The product was as described. A great buying experience.

Purchase of a smoke alarm

by -

Great shopping experience and fantastic price!! thanks!

Solid Replacement

by -

Needed to replace all 7 of my smoke detectors as they had expired (Had no idea they did expire). Found them at Bees for the best price online. Product was shipped same day, got them quick. They were the exact model as my old ones so I didn't need the bases. They plugged in very quickly and work great! I'm good for another 10 years. Great quality for a great price. The service from Bees made them even better.

Great Service/Support/Products/Prices

by -

Always the Best place to go.

Could not have asked for better service...

by -

Bee Lighting had exact model replacement smoke detectors at the lowest price anywhere. Ordering, shipping, packaging were perfect. (Please expand inventory to include more residential (especially kitchen) fixtures)

Smoke/Fire Alarm, 120v w/Battery Backup

by -

Model USI-1204HA were received very timely and worked great after the installation. I didn't have any issues with the installation and it solved my problem with the old alarms chirping.

Quick, Simple and On-time

by -

A great experience, needed a 4 or 5 smoke detectors. The price was better than most, packed securely and shipped to my house quicker than expected. Thank you!

Smoke alarm

by -

Great service. Fast shipping! A+++ I highly recommend.

great price

by -

Smoke detectors were a replacement for a detector no longer made, and the new were an exact fit for electrical plugs from previous install.

smoke detectors

by -

Excellent product