![USI Hardwired Smart Alarm with Smoke, Fire, Carbon Monoxide and Natural Gas Detection - MDSCN111 | Universal Security USI Hardwired Smart Alarm with Smoke, Fire, Carbon Monoxide and Natural Gas Detection - MDSCN111 | Universal Security](https://www.universalsecuritystore.com/store/images/products/large_images/mdscn111-hardwired-iophic-smart-alarm-with-smoke-fire-carbon-monoxide-and-natural-gas-detection.jpg)
USI Hardwired Smart Alarm with Smoke, Fire, Carbon Monoxide and Natural Gas Detection - MDSCN111 | Universal Security
![USI MPC122S Hardwired 2-in-1 Photoelectric Smoke & CO Alarm with 10 Year Tamper Proof Sealed Battery Backup USI MPC122S Hardwired 2-in-1 Photoelectric Smoke & CO Alarm with 10 Year Tamper Proof Sealed Battery Backup](https://www.universalsecurity.com/images/products/MPC122S/mpc122s-2.jpg)
USI MPC122S Hardwired 2-in-1 Photoelectric Smoke & CO Alarm with 10 Year Tamper Proof Sealed Battery Backup
![Universal Security Instruments MCN108 Hardwired 2-in-1 CO and Natural Gas Smart Alarm with Battery Backup Universal Security Instruments MCN108 Hardwired 2-in-1 CO and Natural Gas Smart Alarm with Battery Backup](https://www.universalsecurity.com/images/products/MCN108/MCN108-1.jpg)
Universal Security Instruments MCN108 Hardwired 2-in-1 CO and Natural Gas Smart Alarm with Battery Backup
![Universal Security Instruments 3-In-1 Smoke Fire and Carbon Monoxide Detector 10-Year Sealed Battery Backup Hardwired Microprocessor Intelligence MIC1509S - The Home Depot Universal Security Instruments 3-In-1 Smoke Fire and Carbon Monoxide Detector 10-Year Sealed Battery Backup Hardwired Microprocessor Intelligence MIC1509S - The Home Depot](https://images.thdstatic.com/productImages/4f1e4502-2192-4870-8fa8-124927481fa9/svn/universal-security-instruments-carbon-monoxide-detectors-mic1509s-64_1000.jpg)
Universal Security Instruments 3-In-1 Smoke Fire and Carbon Monoxide Detector 10-Year Sealed Battery Backup Hardwired Microprocessor Intelligence MIC1509S - The Home Depot
![Universal Security Instruments Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com Universal Security Instruments Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com](https://mobileimages.lowes.com/productimages/bc9ef583-37c6-43ef-9204-fc8104d5555e/49841418.jpg)
Universal Security Instruments Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
![USI Hardwired Smart Alarm with Smoke, Fire, Carbon Monoxide and Natural Gas Detection - MDSCN111 | Universal Security USI Hardwired Smart Alarm with Smoke, Fire, Carbon Monoxide and Natural Gas Detection - MDSCN111 | Universal Security](https://www.universalsecuritystore.com/store/images/products/large_images/mdscn111-hardwired-iophic-smart-alarm-with-smoke-fire-carbon-monoxide-and-natural-gas-detection-4.jpg)
USI Hardwired Smart Alarm with Smoke, Fire, Carbon Monoxide and Natural Gas Detection - MDSCN111 | Universal Security
![Universal Security Instruments CD-9775 2-in-1 Carbon Monoxide and Ionization Alarm, 9 Volt - Walmart.com Universal Security Instruments CD-9775 2-in-1 Carbon Monoxide and Ionization Alarm, 9 Volt - Walmart.com](https://i5.walmartimages.com/seo/Universal-Security-Instruments-CD-9775-2-in-1-Carbon-Monoxide-and-Ionization-Alarm-9-Volt_cc3024f4-4d16-46a7-94de-40ef2f9e58c5_1.33da9ae6eda8dabf2d75dafededf9768.jpeg)