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    New Sensing Plus® Multi Criteria Detection Alarms

    Include the latest in smoke and fire safety enhancement features while conforming to the new UL 217 8th Edition standards

    Sensing Plus Alarms
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USI Hallway 3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm with 10 Year Tamper-Proof Sealed Battery (MIC3510SB)
USI Hallway 3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm with 10 Year Tamper-Proof Sealed Battery (MIC3510SB)
10 Year Sealed Tamper-Proof Battery | USST Smart Alarm
Your Price: $45.10  Save: $14.85
Availability: In Stock  Read reviews (76)
View all - Combination Alarms
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USI Electric Hardwired Ionization Smoke and Fire Alarm with Battery Backup (5304)
USI Electric Hardwired Ionization Smoke and Fire Alarm with Battery Backup (5304)
Ionization | Battery Drawer | Silence
Your Price: $14.65  Save: $5.30
Availability: In Stock  Read reviews (155)
View all - Smoke & Fire Alarms
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USI 3-in-1 Hardwired Smoke, Fire & Carbon Monoxide Smart Alarm with 10 Year Tamper-Proof Sealed Battery (MIC1509S)
USI 3-in-1 Hardwired Smoke, Fire & Carbon Monoxide Smart Alarm with 10 Year Tamper-Proof Sealed Battery (MIC1509S)
Hardwired with 10 Year Sealed Battery Backup | USST Smart Alarm
Your Price: $50.35  Save: $19.60
Availability: In Stock  Read reviews (144)
View all - Combination Alarms
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Universal Security Instruments Sensing Plus Multi Criteria Bedroom Smoke & Fire Alarm With 10 Year Tamper Proof Sealed Battery (AMIB3051SC)
Universal Security Instruments Sensing Plus Multi Criteria Bedroom Smoke & Fire Alarm With 10 Year Tamper Proof Sealed Battery (AMIB3051SC)
10 Year Battery | New Multi Criteria Sensor
Your Price: $27.25  Save: $7.70
Availability: In Stock  Read reviews (11)
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USI 2-in-1 Hardwired Smoke & Fire Smart Alarm with 10 Year Sealed Battery & Universal Smoke Sensing Technology (MI106S)
USI 2-in-1 Hardwired Smoke & Fire Smart Alarm with 10 Year Sealed Battery & Universal Smoke Sensing Technology (MI106S)
Hardwired with 10 Year Sealed Battery Back-up | Smart Alarm
Your Price: $23.05  Save: $5.90
Availability: In Stock  Read reviews (110)
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USI Bedroom 2-in-1 Smoke and Fire Smart Alarm with 10 Year Sealed Battery & Universal Smoke Sensing Technology (MI3050SB)
USI Bedroom 2-in-1 Smoke and Fire Smart Alarm with 10 Year Sealed Battery & Universal Smoke Sensing Technology (MI3050SB)
Sealed Battery | 2-in-1 Smart Alarm
Your Price: $19.90  Save: $10.05
Availability: In Stock  Read reviews (46)
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Universal Security Instruments Sensing Plus 3-in-1 Hardwired Combination Smoke & Carbon Monoxide Detector With 10 Year Battery Backup (AMIC1510SB)
Universal Security Instruments Sensing Plus 3-in-1 Hardwired Combination Smoke & Carbon Monoxide Detector With 10 Year Battery Backup (AMIC1510SB)
Hardwired | New Multi Criteria Sensor
Your Price: $62.95  Save: $17.00
Availability: In Stock  Read reviews (5)
View all - Combination Alarms
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Universal Security Instruments Sensing Plus Multi Criteria Hallway Smoke & Carbon Monoxide Alarm With 10 Year Tamper Proof Battery (AMICH3511SC)
Universal Security Instruments Sensing Plus Multi Criteria Hallway Smoke & Carbon Monoxide Alarm With 10 Year Tamper Proof Battery (AMICH3511SC)
10 Year Battery | New Multi Criteria Sensor
Your Price: $55.60  Save: $14.35
Availability: In Stock  Read reviews (7)
View all - Smoke & Fire Alarms
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Universal Security Instruments Sensing Plus Multi Criteria Kitchen Smoke & Fire Alarm With 10 Year Tamper Proof Sealed Battery (AMIK3051SC)
Universal Security Instruments Sensing Plus Multi Criteria Kitchen Smoke & Fire Alarm With 10 Year Tamper Proof Sealed Battery (AMIK3051SC)
10 Year Battery | New Multi Criteria Sensor
Your Price: $30.40  Save: $9.55
Availability: In Stock  Read reviews (6)
View all - Smoke & Fire Alarms
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USI Electric Hardwired 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm with Battery Backup (MCN108)
USI Electric Hardwired 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm with Battery Backup (MCN108)
2-in-1 CO + Natural Gas | Smart Alarm
Your Price: $44.05  Save: $10.90
Availability: In Stock  Read reviews (65)
View all - Combination Alarms
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Universal Security Instruments Sensing Plus Multi Criteria Hardwired Smoke & Fire Alarm With 10 Year Battery Backup (AMI1061SC)
Universal Security Instruments Sensing Plus Multi Criteria Hardwired Smoke & Fire Alarm With 10 Year Battery Backup (AMI1061SC)
Hardwired | Meet UL Standard 217 8th Edition
Your Price: $30.40  Save: $8.55
Availability: In Stock  Read reviews (10)
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USI 4-in-1 Hardwired Universal Smoke Sensing Smart Alarm Smoke, Fire, CO and Natural Gas Detection (MDSCN111)
USI 4-in-1 Hardwired Universal Smoke Sensing Smart Alarm Smoke, Fire, CO and Natural Gas Detection (MDSCN111)
4-in-1 Alarm | Battery Drawer | Silence
Your Price: $52.45  Save: $27.50
Availability: On Order  Read reviews (58)
View all - Combination Alarms
 

Universal Security Instruments Plug-In 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm with Battery Backup (MCND401B)
Universal Security Instruments Plug-In 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm with Battery Backup (MCND401B)
Plug-In Alarm | Display Screen
Your Price: $50.35  Save: $14.60
Availability: In Stock  Read reviews (25)
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Universal Security Instruments Sensing Plus Dual Sensor Hardwired Smoke & Fire Detector With 10 Year Battery Backup (AMI1061SB)
Universal Security Instruments Sensing Plus Dual Sensor Hardwired Smoke & Fire Detector With 10 Year Battery Backup (AMI1061SB)
Hardwired | Meet UL Standard 217 8th Edition
Your Price: $30.40  Save: $8.55
Availability: In Stock  Read reviews (2)
View all - Smoke & Fire Alarms
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Universal Security Instruments Sensing Plus Multi Criteria Smoke, Fire & Carbon Monoxide Alarm With 10 Year Tamper Proof Sealed Battery (AMIC3511SB)
Universal Security Instruments Sensing Plus Multi Criteria Smoke, Fire & Carbon Monoxide Alarm With 10 Year Tamper Proof Sealed Battery (AMIC3511SB)
10 Year Battery | New Multi Criteria Sensor
Your Price: $58.75  Save: $16.20
Availability: In Stock  Read reviews (9)
View all - Combination Alarms
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USI Electric Hardwired 2-in-1 Universal Smoke Sensing Smoke and Fire Alarm with Battery Backup (MDS107)
USI Electric Hardwired 2-in-1 Universal Smoke Sensing Smoke and Fire Alarm with Battery Backup (MDS107)
2-in-1 | Smart Alarm
Your Price: $22.00  Save: $7.95
Availability: In Stock  Read reviews (32)
View all - Smoke & Fire Alarms
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Universal Security Instruments Sensing Plus Multi Criteria Living Area Smoke & Fire Alarm With 10 Year Tamper Proof Sealed Battery (AMIL3051SC)
Universal Security Instruments Sensing Plus Multi Criteria Living Area Smoke & Fire Alarm With 10 Year Tamper Proof Sealed Battery (AMIL3051SC)
10 Year Battery | New Multi Criteria Sensor
Your Price: $29.35  Save: $10.60
Availability: In Stock  Read reviews (5)
View all - Smoke & Fire Alarms
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Universal Security Instruments Sensing Plus Multi Criteria Hardwired Smoke & Carbon Monoxide Alarm With 10 Year Sealed Battery Backup (AMIC1510SC)
Universal Security Instruments Sensing Plus Multi Criteria Hardwired Smoke & Carbon Monoxide Alarm With 10 Year Sealed Battery Backup (AMIC1510SC)
Hardwired | New Multi Criteria Sensor
Your Price: $62.95  Save: $17.00
Availability: On Order  Read reviews (18)
View all - Combination Alarms
 

Universal Security Instruments Plug-In 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm with Battery Backup (MCN400B)
Universal Security Instruments Plug-In 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm with Battery Backup (MCN400B)
2-in-1 Plug-In | Smart Alarm
Your Price: $41.95  Save: $13.00
Availability: In Stock  Read reviews (16)
View all - Carbon Monoxide Alarms
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USI Hardwired 2-in-1 Photoelectric Smoke & Carbon Monoxide Alarm with 10 Year Tamper Proof Sealed Battery Backup (MPC122S)
USI Hardwired 2-in-1 Photoelectric Smoke & Carbon Monoxide Alarm with 10 Year Tamper Proof Sealed Battery Backup (MPC122S)
Photoelectric | Hardwired
Your Price: $60.85  Save: $19.10
Availability: In Stock  Read reviews (4)
View all - Combination Alarms
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Universal Security Instruments Sensing Plus Multi Criteria Smoke & Fire Alarm With 10 Year Tamper Proof Sealed Battery (AMI3051SB)
Universal Security Instruments Sensing Plus Multi Criteria Smoke & Fire Alarm With 10 Year Tamper Proof Sealed Battery (AMI3051SB)
10 Year Battery | Meet UL Standard 217 8th Edition
Your Price: $27.25  Save: $7.70
Availability: In Stock  Read reviews (3)
View all - Smoke & Fire Alarms
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USI Every Room 2-in-1 Smoke and Fire Smart Alarm with 10 Year Sealed Battery & Universal Smoke Sensing Technology (MIE3050S)
USI Every Room 2-in-1 Smoke and Fire Smart Alarm with 10 Year Sealed Battery & Universal Smoke Sensing Technology (MIE3050S)
10 Year Sealed Battery | 2-in-1 Smart Alarm
Your Price: $19.90  Save: $10.05
Availability: Clearance  Read reviews (1)
View all - Smoke & Fire Alarms
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Universal Security Instruments Battery-Operated Universal Smoke Sensing Smoke and Fire Alarm (MDS300B)
Universal Security Instruments Battery-Operated Universal Smoke Sensing Smoke and Fire Alarm (MDS300B)
2-in-1 | Smart Alarm
Your Price: $18.85  Save: $9.10
Availability: In Stock  Read reviews (7)
View all - Smoke & Fire Alarms
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Universal Security Instruments Quick Change Battery-Operated Ionization Smoke & Fire Alarm (976LR)
Universal Security Instruments Quick Change Battery-Operated Ionization Smoke & Fire Alarm (976LR)
Ionization | Silence | Quick Change Battery Installation
Your Price: $9.75  Save: $2.20
Availability: In Stock  Read reviews (3)
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  • Sensing Plus smoke alarms

    Sensing® Plus

    AI-artificial intelligence can classify smoke & fire profiles.

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    USST Dual Sensing

    Responds to both fast flaming and slow smoldering fires.

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