Model # MICN109

Internet #203672643

Universal Security Instruments 120-Volt AC Hardwired Ionization Smoke and Fire Carbon Monoxide and Natural Gas Alarm with Battery Backup
0042741001090

Universal Security Instruments

120-Volt AC Hardwired Ionization Smoke and Fire Carbon Monoxide and Natural Gas Alarm with Battery Backup

  • Working smoke alarms cut the risk of dying in a home fire in half
  • Natural gas leaks can be undetecable by the sense of smell alone
  • 9 out of 10 carbon monoxide incidents take place in the home
$39.77 /each

Frequently Bought Together

Product Overview

Universal Security 3-in-1 Smart Alarm uses a single sensor to detect both CO and Natural Gas. Microprocessor Intelligence provides superior nuisance alarm resistance, temperature and humidity compensation, self diagnostics and Quick Find alarm origination features. Perfect for new or replacement installations, this hardwired 120-Volt AC/DC combination smoke and fire, carbon monoxide and natural gas alarm offers time-saving installation features, value and quality.

  • 120-Volt AC Wired-in
  • 9-Volt battery backup (battery included)
  • Microprocessor virtually eliminated nuisance alarms
  • Product end-of-life service warning
  • Test/reset button
  • Quick draw battery drawer
  • 4 LED's indicates power, smoke, co, and gas
  • Interconnectable up to 24 compatible devices
  • Tamper resistant locking feature
  • Battery activation pull tab
  • Loud 85dB alarm
  • 5 Year limited warranty


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Customer Questions & Answers

Why are these not being shipped to California

Universal Security Instruments Model # MICN109 Internet # 203672643
Asked by: Jan
Hi Jan, thank you for your recent inquiry with The Home Depot. Unfortunately, due certain regulations and restrictions put in place by your state we are unable to ship the 120-Volt AC Hardwired Ionization Smoke and Fire Carbon Monoxide and Natural Gas Alarm to California. We appreciate your business and look forward to serving you in the future. Thank you for shopping Home Depot.
Answered by: THDSupport
Date published: 2017-02-19

2 wire connection

The suggested replacement for the USI 7795 with a three wire connector is the MICN109 however the specifications of the connection indicates that it is a two wire. Do I need to make some wiring modification?
Asked by: Jk48
Only if it is to be linked to other detectors.
Answered by: ZapMan
Date published: 2017-02-19

Can this combo unit take the place of an existing hardwired first alert fire only alarm?

I have replaced one of my hardwired fire units on my own with no problem; is the wiring the same with adapter or will i need an electrician to re-wire the unit or units?
Asked by: Rob

are these units NYC building code compliant ??

Asked by: CEEJAY
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Customer Reviews

120-Volt AC Hardwired Ionization Smoke and Fire Carbon Monoxide and Natural Gas Alarm with Battery Backup is rated 4.1 out of 5 by 17.
Rated 4 out of 5 by from The detector was fairly easy to install but getting the detector to affix to the base was problem... The detector was fairly easy to install but getting the detector to affix to the base was problematic. I thought i had aligned everything properly but it seemed more difficult than normal to have the holes line up and the detector lock onto the base. Additionally, the 9 volt battery supplied with the detector was DOA and i had the detector chirping as soon as it was installed, necessitating a new battery that i had to supply.
Date published: 2016-12-06
Rated 5 out of 5 by from The smoke/CO/natural gas alarm was a replacement for a failed... The smoke/CO/natural gas alarm was a replacement for a failed unit.The new unit was very easy to install. The original unit lasted only 30 months , not 7 years per manufacturer, so hope this one is better. We will see!
Date published: 2017-02-07
Rated 5 out of 5 by from Had this model installed when we upgraded our electric service. Good consistent alert performanc... Had this model installed when we upgraded our electric service. Good consistent alert performance. USI has a broad product line to choose from when adding smoke, CO, and LP/natural gas alarm systems. Would chose USI for future purchases.
Date published: 2017-01-31
Rated 5 out of 5 by from Very easy to replace also nice it comes with a battery Very easy to replace also nice it comes with a battery
Date published: 2016-11-15
Rated 2 out of 5 by from Replaced 3 of 4 I have 4 of these in my house, and my house is 16 month old. I have had to replace 3 of the 4 already as once they go they go out with the full squeal and there is no stopping it until you take it off and pull the battery out. They are easy to replace, but not sure why they malfunction so quickly. I have 6 more of the same brand in my house but they are fire protection only units. Not one of those has malfunctioned. All are hardwired.
Date published: 2015-11-19
Rated 1 out of 5 by from Failed in 18 mos, terrible manufacturers warranty The electrician helping with my basement remodel bought the detectors from Home Depot in Feb15. The Manufacturer wanted me to send the defective item with a check for $11 and then wait for them to send a replacement, not even specifying if it will be new or reconditioned.
Date published: 2016-08-10
Rated 5 out of 5 by from Just right Replacement for the one I had, which was only 6 years old since my house was built. This was easy to install, perfect fit to the existing wiring, and hasn't given me any problems. Now I want to replace my others so they all match.
Date published: 2016-07-26
Rated 1 out of 5 by from skip it! after 3 days of purchase it just starts beeping...replace battery same issue.
Date published: 2016-08-23
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