Universal Security Instruments - Smoke, CO & Safety Products

USI (Universal Security Instruments, Inc.) makes the most innovative home protection solutions available today. Since our founding in 1969, we’ve become one of the largest manufacturers of smoke and carbon monoxide alarms in the world. We hold 11 patents on detection technologies, based on our proprietary research into the science of fire and fire detection. Our state-of-the-art production facilities are ISO9001 certified, and we’ve gained approval to distribute smoke and carbon monoxide alarms in more than 30 countries.

USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm with Battery Backup

Smoke & Fire Alarms

USI Electric 5304 Hardwired Ionization Smoke and Fire Alarm with Battery Backup

USI Electric MI106S Hardwired 2-in 1 Smoke and Fire Alarm with 10 Year Sealed Battery Backup

Smoke & Fire Alarms

USI Electric MI106S Hardwired 2-in 1 Smoke and Fire Alarm with 10 Year Sealed Battery Backup

Universal Security Instruments MIC1509S Hardwired 3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery

Combo Smoke & Gas Alarms

Universal Security Instruments MIC1509S Hardwired 3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery

Sensing Plus AMI1061SC Multi Criteria Hardwired Smoke & Fire Alarm With 10 Year Battery Backup - Retail

Sensing Plus Alarms

Sensing Plus AMI1061SC Multi Criteria Hardwired Smoke & Fire Alarm With 10 Year Battery Backup - Retail

Sensing Plus AMIB3051SC Multi Criteria Bedroom Smoke & Fire Alarm With 10 Year Tamper Proof Sealed Battery

Sensing Plus Alarms

Sensing Plus AMIB3051SC Multi Criteria Bedroom Smoke & Fire Alarm With 10 Year Tamper Proof Sealed Battery

Sensing Plus AMICH3511SC Multi Criteria Hallway Combo Smoke, Fire & Carbon Monoxide Alarm With 10 Year Battery

Sensing Plus Alarms

Sensing Plus AMICH3511SC Multi Criteria Hallway Combo Smoke, Fire & Carbon Monoxide Alarm With 10 Year Battery

Sensing Plus AMIK3051SC Multi Criteria Kitchen Smoke & Fire Alarm With 10 Year Battery

Sensing Plus Alarms

Sensing Plus AMIK3051SC Multi Criteria Kitchen Smoke & Fire Alarm With 10 Year Battery

Sensing Plus AMIL3051SC Multi Criteria Living Area Smoke & Fire Alarm With 10 Year Battery

Sensing Plus Alarms

Sensing Plus AMIL3051SC Multi Criteria Living Area Smoke & Fire Alarm With 10 Year Battery

Sensing Plus AMIC1510SC Multi Criteria Hardwired Combo Smoke, Fire & Carbon Monoxide Alarm With 10 Year Battery Backup

Sensing Plus Alarms

Sensing Plus AMIC1510SC Multi Criteria Hardwired Combo Smoke, Fire & Carbon Monoxide Alarm With 10 Year Battery Backup

Universal Security Instruments MIE3050S Every Room 2-in-1 Smoke and Fire Smart Alarm with 10 Year Sealed Battery

Smoke & Fire Alarms

Universal Security Instruments MIE3050S Every Room 2-in-1 Smoke and Fire Smart Alarm with 10 Year Sealed Battery

Universal Security Instruments MI3050SB 2-in-1 Smoke and Fire Smart Alarm with 10 Year Sealed Battery

Smoke & Fire Alarms

Universal Security Instruments MI3050SB 2-in-1 Smoke and Fire Smart Alarm with 10 Year Sealed Battery

Universal Security Instruments MPL316S Photoelectric 10 Year Living Area Smoke & Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments MPL316S Photoelectric 10 Year Living Area Smoke & Fire Alarm

USI Electric USI-1227L Battery-Operated Ionization Smoke and Fire Alarm

Smoke & Fire Alarms

USI Electric USI-1227L Battery-Operated Ionization Smoke and Fire Alarm

Universal Security Instruments MDS300 Universal Smoke Sensing Technology (IoPhic) Battery-Operated Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments MDS300 Universal Smoke Sensing Technology (IoPhic) Battery-Operated Smoke and Fire Alarm

Universal Security Instruments SS‑901‑2C/3CC Battery Operated Photoelectric Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments SS‑901‑2C/3CC Battery Operated Photoelectric Smoke and Fire Alarm

Universal Security Instruments SS‑901‑LR Battery Operated Photoelectric Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments SS‑901‑LR Battery Operated Photoelectric Smoke and Fire Alarm

Universal Security Instruments SS‑770‑24CC Battery Operated Ionization Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments SS‑770‑24CC Battery Operated Ionization Smoke and Fire Alarm

Universal Security Instruments SS‑770‑6CC Battery Operated Ionization Smoke and Fire Alarms, 6-Pack

Smoke & Fire Alarms

Universal Security Instruments SS‑770‑6CC Battery Operated Ionization Smoke and Fire Alarms, 6-Pack

Universal Security Instruments 976LR Battery-Operated Ionization Smoke & Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments 976LR Battery-Operated Ionization Smoke & Fire Alarm

USI Electric MDS107 Hardwired Universal Smoke Sensing Technology (IoPhic) Smoke and Fire Alarm with Battery Backup

Smoke & Fire Alarms

USI Electric MDS107 Hardwired Universal Smoke Sensing Technology (IoPhic) Smoke and Fire Alarm with Battery Backup

USI Electric MP117 Hardwired Photoelectric Smoke and Fire Alarm with Battery Backup

Smoke & Fire Alarms

USI Electric MP117 Hardwired Photoelectric Smoke and Fire Alarm with Battery Backup

USI Electric SLW127 Hardwired LED Wall Mounted Smart Strobe Light

Home Safety & Security

USI Electric SLW127 Hardwired LED Wall Mounted Smart Strobe Light

USI Electric USI-1204 Hardwired Ionization Smoke and Fire Alarm with Backup Battery

Smoke & Fire Alarms

USI Electric USI-1204 Hardwired Ionization Smoke and Fire Alarm with Backup Battery

USI Electric 2453 Hardwired Ionization Smoke Alarm & Strobe Kit for Hearing Impaired

Smoke & Fire Alarms

USI Electric 2453 Hardwired Ionization Smoke Alarm & Strobe Kit for Hearing Impaired

USI Electric 2417 Hardwired Photoelectric Smoke Alarm & Strobe Kit for Hearing Impaired

Smoke & Fire Alarms

USI Electric 2417 Hardwired Photoelectric Smoke Alarm & Strobe Kit for Hearing Impaired

USI Electric MDSCN111 4-in-1 Universal Smoke Sensing Technology (IoPhic) Hardwired Smart Alarm

Combo Smoke & Gas Alarms

USI Electric MDSCN111 4-in-1 Universal Smoke Sensing Technology (IoPhic) Hardwired Smart Alarm

USI Electric MCN108 Hardwired 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm with Battery Backup

Carbon Monoxide Alarms

USI Electric MCN108 Hardwired 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm with Battery Backup

Universal Security Instruments MCND401 Plug-In 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm with Battery Backup

Carbon Monoxide Alarms

Universal Security Instruments MCND401 Plug-In 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm with Battery Backup

Universal Security Instruments MCN400 Plug-In 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm with Battery Backup

Carbon Monoxide Alarms

Universal Security Instruments MCN400 Plug-In 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm with Battery Backup

Universal Security Instruments MIC3510SB 3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery

Combo Smoke & Gas Alarms

Universal Security Instruments MIC3510SB 3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery

Universal Security Instruments MPC322S 2-in-1 Photoelectric Smoke & Carbon Monoxide Alarm

Combo Smoke & Gas Alarms

Universal Security Instruments MPC322S 2-in-1 Photoelectric Smoke & Carbon Monoxide Alarm

Universal Security Instruments MC304SB Carbon Monoxide Smart Alarm with 10 Year Sealed Battery

Carbon Monoxide Alarms

Universal Security Instruments MC304SB Carbon Monoxide Smart Alarm with 10 Year Sealed Battery

Universal Security Instruments MCD305SB Carbon Monoxide Smart Alarm with 10 Year Sealed Battery and Display Screen

Carbon Monoxide Alarms

Universal Security Instruments MCD305SB Carbon Monoxide Smart Alarm with 10 Year Sealed Battery and Display Screen

Universal Security Instruments MPC122S Hardwired 2-in-1 Photoelectric Smoke & Carbon Monoxide Alarm

Combo Smoke & Gas Alarms

Universal Security Instruments MPC122S Hardwired 2-in-1 Photoelectric Smoke & Carbon Monoxide Alarm

Universal Security Instruments 2975 Battery-Operated Ionization Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments 2975 Battery-Operated Ionization Smoke and Fire Alarm

Universal Security Instruments 2975L Battery-Operated Ionization Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments 2975L Battery-Operated Ionization Smoke and Fire Alarm

Universal Security Instruments MDS300L Universal Smoke Sensing Technology (IoPhic) Battery-Operated Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments MDS300L Universal Smoke Sensing Technology (IoPhic) Battery-Operated Smoke and Fire Alarm

Universal Security Instruments SS‑770 Battery Operated Ionization Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments SS‑770 Battery Operated Ionization Smoke and Fire Alarm

Universal Security Instruments SS‑770‑C Battery Operated Ionization Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments SS‑770‑C Battery Operated Ionization Smoke and Fire Alarm

Universal Security Instruments SS‑770‑LRC Battery Operated Ionization Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments SS‑770‑LRC Battery Operated Ionization Smoke and Fire Alarm

Universal Security Instruments SS‑775 RV Battery Operated Ionization Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments SS‑775 RV Battery Operated Ionization Smoke and Fire Alarm

Universal Security Instruments SS‑775‑LRC Battery Operated Ionization Smoke Alarm

Smoke & Fire Alarms

Universal Security Instruments SS‑775‑LRC Battery Operated Ionization Smoke Alarm

Universal Security Instruments SS‑901 Battery Operated Photoelectric Alarm

Smoke & Fire Alarms

Universal Security Instruments SS‑901 Battery Operated Photoelectric Alarm

Universal Security Instruments SS‑901‑LRC Battery Operated Photoelectric Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments SS‑901‑LRC Battery Operated Photoelectric Smoke and Fire Alarm

USI Electric 5304BP6 Hardwired Ionization Smoke and Fire Alarms with Battery Backup, 6-Pack

Smoke & Fire Alarms

USI Electric 5304BP6 Hardwired Ionization Smoke and Fire Alarms with Battery Backup, 6-Pack

Universal Security Instruments SS‑2895 Hardwired Photoelectric Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments SS‑2895 Hardwired Photoelectric Smoke and Fire Alarm

Universal Security Instruments SS‑2895‑C Hardwired Photoelectric Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments SS‑2895‑C Hardwired Photoelectric Smoke and Fire Alarm

USI Electric USI-1209 Hardwired Ionization Smoke and Fire Alarm with Backup Battery

Smoke & Fire Alarms

USI Electric USI-1209 Hardwired Ionization Smoke and Fire Alarm with Backup Battery

Universal Security Instruments USI‑3204 Wired‑In 120 Volt Photoelectric Alarm

Smoke & Fire Alarms

Universal Security Instruments USI‑3204 Wired‑In 120 Volt Photoelectric Alarm

Universal Security Instruments USI‑3204‑2P‑3CC Wired-In 120 Volt Photoelectric Alarm

Smoke & Fire Alarms

Universal Security Instruments USI‑3204‑2P‑3CC Wired-In 120 Volt Photoelectric Alarm

USI Electric USI-960 Relay Module for Smoke and Fire Alarms

Home Safety & Security

USI Electric USI-960 Relay Module for Smoke and Fire Alarms

USI Electric USI-2177 Hardwired Strobe Light For Use With Smoke Alarms

Home Safety & Security

USI Electric USI-2177 Hardwired Strobe Light For Use With Smoke Alarms

USI Electric USI-2413 Smoke Alarm and Strobe Light Kit, 120-Volt

Home Safety & Security

USI Electric USI-2413 Smoke Alarm and Strobe Light Kit, 120-Volt

Universal Security Instruments MDS300-401 4-in-1 Universal Smoke Sensing (IoPhic) Smoke and Fire Alarm with CO and Natural Gas Alarm

Combo Smoke & Gas Alarms

Universal Security Instruments MDS300-401 4-in-1 Universal Smoke Sensing (IoPhic) Smoke and Fire Alarm with CO and Natural Gas Alarm

USI-5204 and USI-2795 - Wired-In 120 Volt Ionization Smoke Alarm

Smoke & Fire Alarms

USI-5204 and USI-2795 - Wired-In 120 Volt Ionization Smoke Alarm

Universal Security Instruments CD-9000 9-Volt Battery-Operated Carbon Monoxide Alarm

Carbon Monoxide Alarms

Universal Security Instruments CD-9000 9-Volt Battery-Operated Carbon Monoxide Alarm

Universal Security Instruments USI-7795 120-Volt AC/DC Wired-In Combination Smoke and Carbon Monoxide Alarm

Combo Smoke & Gas Alarms

Universal Security Instruments USI-7795 120-Volt AC/DC Wired-In Combination Smoke and Carbon Monoxide Alarm

Universal Security Instruments CD-9795 120-Volt AC/DC Wired-In Combination Smoke and Carbon Monoxide Alarm

Combo Smoke & Gas Alarms

Universal Security Instruments CD-9795 120-Volt AC/DC Wired-In Combination Smoke and Carbon Monoxide Alarm

Universal Security Instruments MICH3510S 3-in-1 Hallway Smoke, Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery

Combo Smoke & Gas Alarms

Universal Security Instruments MICH3510S 3-in-1 Hallway Smoke, Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery

USI Electric MICN109 Hardwired 3-in-1 Smoke, Carbon Monoxide and Natural Gas Alarm

Combo Smoke & Gas Alarms

USI Electric MICN109 Hardwired 3-in-1 Smoke, Carbon Monoxide and Natural Gas Alarm

Universal Security Instruments MP116S 10 Year Photoelectric Hardwired Smoke & Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments MP116S 10 Year Photoelectric Hardwired Smoke & Fire Alarm

Universal Security Instruments MI3050 Battery-Operated Ionization Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments MI3050 Battery-Operated Ionization Smoke and Fire Alarm

Universal Security Instruments MP308 Battery-Operated Photoelectric Smoke and Fire Alarm

Smoke & Fire Alarms

Universal Security Instruments MP308 Battery-Operated Photoelectric Smoke and Fire Alarm

USI Electric USI-1122L Battery-Operated Ionization Smoke Alarm

Smoke & Fire Alarms

USI Electric USI-1122L Battery-Operated Ionization Smoke Alarm

USI Electric 5304L Hardwired Ionization Smoke and Fire Alarm with Battery Backup

Smoke & Fire Alarms

USI Electric 5304L Hardwired Ionization Smoke and Fire Alarm with Battery Backup

Universal Security Instruments MDSK300S 2-in-1 Kitchen Smoke and Fire Smart Alarm with 10 Year Sealed Battery

Smoke & Fire Alarms

Universal Security Instruments MDSK300S 2-in-1 Kitchen Smoke and Fire Smart Alarm with 10 Year Sealed Battery

Universal Security Instruments MIB3050S 2-in-1 Bedroom Smoke and Fire Smart Alarm with 10 Year Sealed Battery

Smoke & Fire Alarms

Universal Security Instruments MIB3050S 2-in-1 Bedroom Smoke and Fire Smart Alarm with 10 Year Sealed Battery

USI Electric MI106 Hardwired Ionization Smoke and Fire Alarm with Battery Backup

Smoke & Fire Alarms

USI Electric MI106 Hardwired Ionization Smoke and Fire Alarm with Battery Backup

Sensing Plus AMI1061SB Multi Criteria Hardwired Smoke & Fire Alarm With 10 Year Battery Backup

Sensing Plus Alarms

Sensing Plus AMI1061SB Multi Criteria Hardwired Smoke & Fire Alarm With 10 Year Battery Backup

Sensing Plus AMI3051SB Multi Criteria Smoke & Fire Alarm With 10 Year Tamper Proof Sealed Battery

Sensing Plus Alarms

Sensing Plus AMI3051SB Multi Criteria Smoke & Fire Alarm With 10 Year Tamper Proof Sealed Battery

Sensing Plus AMIC3511SB Multi Criteria Combo Smoke, Fire & Carbon Monoxide Alarm With 10 Year Battery

Sensing Plus Alarms

Sensing Plus AMIC3511SB Multi Criteria Combo Smoke, Fire & Carbon Monoxide Alarm With 10 Year Battery

Sensing Plus AMIC1510SB Multi Criteria Hardwired Combo Smoke, Fire & Carbon Monoxide Alarm With 10 Year Battery Backup

Sensing Plus Alarms

Sensing Plus AMIC1510SB Multi Criteria Hardwired Combo Smoke, Fire & Carbon Monoxide Alarm With 10 Year Battery Backup

USI (Universal Security Instruments) has been a leader in home protection since 1969. As one of the world's largest manufacturers of smoke and carbon monoxide alarms, USI is dedicated to providing innovative safety solutions with a focus on quality, reliability, and cutting-edge technology...

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