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

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

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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/FireColor FinishWhite
Housing MaterialThermoplasticHumidity Range5% - 95%
Sensor TechnologyIonization

Included Components

Emergency Battery Includedyes

Warranty & Certifications

CertificationsNFPA, CSFMProduct Warranty10 Years
UL 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
11/20/2017 12:00:00 pm

On time

by Glenn R -

On time

3/29/2016 12:00:00 pm


by Howard M -

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.

11/1/2015 12:00:00 pm

Pleasant Experience from beginning to end...

by Paula M -

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.