Shop USI Smoke & Fire Alarms
HomElectrical carries USI's innovative smoke and fire alarms to ensure your family's safety. These detectors are available in multiple models, including universal smoke sensing technology, photoelectric, and ionization models. For the best deals on USI's smoke and fire alarms, shop at HomElectrical!
Hardwire Smoke & Fire Alarm w/ 10 Yr Battery, Bulk
USI/SM/HW/10YR/3
Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires Interconnected Alarms - For optimal safety, once one...
$100.02Pack of 3
Hardwire Smoke & Fire Alarm w/ 10 Yr Battery
USI/SM/HW10YR/P
Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires Interconnected Alarms - For optimal safety, once one...
$35.11Each
Battery Operated Smoke & Fire Alarm, Bulk
USI/SM/REP/3
Bulk Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires Replaceable Battery - Ensures continuous protection even...
$45.20Pack of 3
Battery Operated Smoke & Fire Alarm
USI/SM/REP
Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires Replaceable Battery - Ensures continuous protection even during...
$15.88Each
Hardwire Smoke & Fire Alarm w/ Replaceable Battery, Bulk
USI/SM/HWREP/3
Bulk Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires Interconnected Alarms - Provides comprehensive coverage throughout...
$59.80Pack of 3
Hardwire Smoke & Fire Alarm w/ Replaceable Battery
USI/SM/HWREP
Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires Interconnected Alarms - Provides comprehensive coverage throughout your...
$21.00Each
10 Year Battery Smoke & Fire Alarm, Bulk
USI/SM/10YR/MINI/3
Bulk Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires 10-Year Sealed Battery - Eliminates low battery...
$71.46Pack of 3
10 Year Battery Smoke & Fire Alarm
USI/SM/10YR/MINI
Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires 10-Year Sealed Battery - Eliminates low battery concerns...
$25.11Each
Strobe Kit w/ USI-MP116S, USI-960, and USI-2177
2416S
Relay Module: USI-960 Relay Module has "Form C Dry Contacts" only (normally open and normally closed) and does not supply...
Discontinued
Sensing Plus Multi Criteria Smoke & Fire Alarm, 10 Year Sealed Battery
AMIK3051SC-4P
2-in-1 Smoke and Fire Smart Alarm provides 10 years of continuous protection against fast flaming and slow smoldering fires New...
Discontinued
Relay Module for Smoke and Fire Alarms
960
Universal Security Instruments Relay Module for Smoke and Fire Alarms is compatible with most USI electric and Universal security smoke...
Discontinued
Photoelectric Smoke and Fire Alarm, 9V Battery Operated
SS-901-LR
Universal Security Instruments Battery-Operated Photoelectric Smoke and Fire Alarm features: 9 volt battery operated Batteries permit continued use after power...
Discontinued
LED Smart Strobe, Interconnectable, Hardwired
SLW127
Features a super bright 177 Candela LED strobe light LED strobe light triggers when interconnectable smoke, carbon monoxide, or combination...
Discontinued
Ionization Smoke Alarm & Strobe Kit, Hardwired
2453
Designed to alert hearing impaired individuals to smoke and fire hazards Features two tamper resistant locking features to prevent unauthorized...
Discontinued
Smoke Alarm Strobe, 120V AC, Hardwired
2177
120VAC operation (400 mA) Mounts to most 4-in single/double gang boxes (adapter plate included) Xenon strobe light maintains constant 1...
Discontinued
Photoelectric Smoke Detector, Hardwired w/ 9V Battery
MP116S
Replacement for 3204 smoke detector Tamper proof 10 year sealed battery Lithium-free batteries Connect up to 24 compatible alarms and...
Discontinued
9V Battery Operated Fire Alarm w/ Ionization Sensor
SS-770-6CC
USI Electric 9V Battery Operated Fire Alarm w/ Ionization Sensor features: Compact size 9 volt battery included Audible low battery...
Discontinued
Battery-Operated Ionization Smoke and Fire Alarm
SS-770-LR
Universal Security Instrument Battery-Operated Ionization Smoke and Fire Alarm features: Ionization Smoke and Fire Alarm responds quickly to fast-flaming fires...
Discontinued
IoPhic Smoke & Fire Alarm, 9V Battery Operated
MDS300B
Universal Security Instruments Universal Smoke Sensing Technology (IoPhic) Battery-Operated Smoke and Fire Alarm features: Responds quickest to fast flaming fires...
Discontinued
Hardwired Ionization Smoke Detector and Fire Alarm
1204
The Electrical smoke detector and fire alarm is ideal for the home and office use. The smoke alarm has features...
Discontinued
Smoke Detector & Fire Alarm w/ Ionization Sensor, Hardwired
5304
120 Volt Smoke and Fire alarm is designed to keep an area safe by emitting a loud 85...
Discontinued
Ionization Smoke & Fire Alarm, Large Ring, 9V Battery Run
976LR
USI Battery Operated Ionization Smoke and Fire Alarm is battery operated with super-heavy duty battery included. Tamper resistant alarm with...
Discontinued
Portable Emergency Lighting System
HE-430
Automatic Emergency Lighting System are excellent for any emergencies. The lighting system stays fully charged and emergency ready because of...
Discontinued
Hardwired Ionization Smoke & Fire Alarm w/ Backup Battery
MI106
USI Ionization Smoke and Fire Alarm detects fast burning fires. 120V AC Wired In with backup 9V battery to ensure...
Discontinued
Ionization Smoke and Fire Alarm, 9V Battery Operated
MI3050
USI Battery Operated Ionization Smoke and Fire Alarm effectively detects fast burning fires. Battery operated with 9V Alkaline battery and...
Discontinued
Ionization Sensor Smoke Alarm, 9V Battery Operated
1122L
USI Battery Operated Smoke and Fire Alarm is powered by a 10 year Lithium battery. The Ionization sensor detects fast...
Discontinued
120V Wired In Heat Alarm with Backup Battery
2430
USI 2430Wired In Heat Alarm detects high temperatures and alerts any threats with a loud 85dB alarm. Backup battery ensures...
Discontinued
Photoelectric Smoke and Fire Alarm, 9V Battery Operated
MP308
USI Battery operated Photoelectric Smoke and Fire Alarm effectively detects smoldering fires. Photoelectric sensor resists nuisance and false alarms. Battery...
Discontinued
Ionization Smoke and Fire Alarm, 9V Battery Operated
2975
USI Battery Operated Ionization Smoke and Fire Alarm resists nuisance and false alarms. Battery operated with easy access battery drawer...
Discontinued
Ionization Smoke and Fire Alarm, Lithium 9V Battery
2975L
USI Lithium Battery Operated Ionization Smoke and Fire Alarm detects fast burning fires in ample time. Lithium battery with 10...
Discontinued
Hardwire Smoke & Fire Alarm w/ 10 Yr Battery, Bulk
USI/SM/HW/10YR/3
Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires Interconnected Alarms - For optimal safety, once one...
$100.02Pack of 3
Hardwire Smoke & Fire Alarm w/ 10 Yr Battery
USI/SM/HW10YR/P
Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires Interconnected Alarms - For optimal safety, once one...
$35.11Each
Battery Operated Smoke & Fire Alarm, Bulk
USI/SM/REP/3
Bulk Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires Replaceable Battery - Ensures continuous protection even...
$45.20Pack of 3
Battery Operated Smoke & Fire Alarm
USI/SM/REP
Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires Replaceable Battery - Ensures continuous protection even during...
$15.88Each
Hardwire Smoke & Fire Alarm w/ Replaceable Battery, Bulk
USI/SM/HWREP/3
Bulk Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires Interconnected Alarms - Provides comprehensive coverage throughout...
$59.80Pack of 3
Hardwire Smoke & Fire Alarm w/ Replaceable Battery
USI/SM/HWREP
Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires Interconnected Alarms - Provides comprehensive coverage throughout your...
$21.00Each
10 Year Battery Smoke & Fire Alarm, Bulk
USI/SM/10YR/MINI/3
Bulk Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires 10-Year Sealed Battery - Eliminates low battery...
$71.46Pack of 3
10 Year Battery Smoke & Fire Alarm
USI/SM/10YR/MINI
Sensing Plus Multi-Criteria Detection accurately identifies both slow-burning and fast-flaming fires 10-Year Sealed Battery - Eliminates low battery concerns...
$25.11Each
Strobe Kit w/ USI-MP116S, USI-960, and USI-2177
2416S
Relay Module: USI-960 Relay Module has "Form C Dry Contacts" only (normally open and normally closed) and does not supply...
Discontinued
Sensing Plus Multi Criteria Smoke & Fire Alarm, 10 Year Sealed Battery
AMIK3051SC-4P
2-in-1 Smoke and Fire Smart Alarm provides 10 years of continuous protection against fast flaming and slow smoldering fires New...
Discontinued
Relay Module for Smoke and Fire Alarms
960
Universal Security Instruments Relay Module for Smoke and Fire Alarms is compatible with most USI electric and Universal security smoke...
Discontinued
Photoelectric Smoke and Fire Alarm, 9V Battery Operated
SS-901-LR
Universal Security Instruments Battery-Operated Photoelectric Smoke and Fire Alarm features: 9 volt battery operated Batteries permit continued use after power...
Discontinued
LED Smart Strobe, Interconnectable, Hardwired
SLW127
Features a super bright 177 Candela LED strobe light LED strobe light triggers when interconnectable smoke, carbon monoxide, or combination...
Discontinued
Ionization Smoke Alarm & Strobe Kit, Hardwired
2453
Designed to alert hearing impaired individuals to smoke and fire hazards Features two tamper resistant locking features to prevent unauthorized...
Discontinued
Smoke Alarm Strobe, 120V AC, Hardwired
2177
120VAC operation (400 mA) Mounts to most 4-in single/double gang boxes (adapter plate included) Xenon strobe light maintains constant 1...
Discontinued
Photoelectric Smoke Detector, Hardwired w/ 9V Battery
MP116S
Replacement for 3204 smoke detector Tamper proof 10 year sealed battery Lithium-free batteries Connect up to 24 compatible alarms and...
Discontinued
9V Battery Operated Fire Alarm w/ Ionization Sensor
SS-770-6CC
USI Electric 9V Battery Operated Fire Alarm w/ Ionization Sensor features: Compact size 9 volt battery included Audible low battery...
Discontinued
Battery-Operated Ionization Smoke and Fire Alarm
SS-770-LR
Universal Security Instrument Battery-Operated Ionization Smoke and Fire Alarm features: Ionization Smoke and Fire Alarm responds quickly to fast-flaming fires...
Discontinued
IoPhic Smoke & Fire Alarm, 9V Battery Operated
MDS300B
Universal Security Instruments Universal Smoke Sensing Technology (IoPhic) Battery-Operated Smoke and Fire Alarm features: Responds quickest to fast flaming fires...
Discontinued
Hardwired Ionization Smoke Detector and Fire Alarm
1204
The Electrical smoke detector and fire alarm is ideal for the home and office use. The smoke alarm has features...
Discontinued
Smoke Detector & Fire Alarm w/ Ionization Sensor, Hardwired
5304
120 Volt Smoke and Fire alarm is designed to keep an area safe by emitting a loud 85...
Discontinued
Ionization Smoke & Fire Alarm, Large Ring, 9V Battery Run
976LR
USI Battery Operated Ionization Smoke and Fire Alarm is battery operated with super-heavy duty battery included. Tamper resistant alarm with...
Discontinued
Portable Emergency Lighting System
HE-430
Automatic Emergency Lighting System are excellent for any emergencies. The lighting system stays fully charged and emergency ready because of...
Discontinued
Hardwired Ionization Smoke & Fire Alarm w/ Backup Battery
MI106
USI Ionization Smoke and Fire Alarm detects fast burning fires. 120V AC Wired In with backup 9V battery to ensure...
Discontinued
Ionization Smoke and Fire Alarm, 9V Battery Operated
MI3050
USI Battery Operated Ionization Smoke and Fire Alarm effectively detects fast burning fires. Battery operated with 9V Alkaline battery and...
Discontinued
Ionization Sensor Smoke Alarm, 9V Battery Operated
1122L
USI Battery Operated Smoke and Fire Alarm is powered by a 10 year Lithium battery. The Ionization sensor detects fast...
Discontinued
120V Wired In Heat Alarm with Backup Battery
2430
USI 2430Wired In Heat Alarm detects high temperatures and alerts any threats with a loud 85dB alarm. Backup battery ensures...
Discontinued
Photoelectric Smoke and Fire Alarm, 9V Battery Operated
MP308
USI Battery operated Photoelectric Smoke and Fire Alarm effectively detects smoldering fires. Photoelectric sensor resists nuisance and false alarms. Battery...
Discontinued
Ionization Smoke and Fire Alarm, 9V Battery Operated
2975
USI Battery Operated Ionization Smoke and Fire Alarm resists nuisance and false alarms. Battery operated with easy access battery drawer...
Discontinued
Ionization Smoke and Fire Alarm, Lithium 9V Battery
2975L
USI Lithium Battery Operated Ionization Smoke and Fire Alarm detects fast burning fires in ample time. Lithium battery with 10...
Discontinued