USI 4-in-1 Hardwired Universal Smoke Sensing Smart Alarm Smoke, Fire, CO and Natural Gas Detection (MDSCN111)
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- View Video On This Product- 4-in-1 alarm protects against fast-flaming fires, smoldering smoke, carbon monoxide and natural gas (or methane).
- 120-volt AC hardwired alarm with backup battery is suitable for houses, apartments and mobile homes.
- Universal Sensing Technology responds 87-percent faster to slow smoldering fires and responds quickest to fast flaming fires.
- Features a quick activation pull-tab and a front-loading battery drawer for replacement without removing the alarm from the bracket.
- Comes with a 7 year limited warranty.
- Revolutionary Universal Smoke Sensing Technology
The USI Electric MDSCN111 Hardwired Smart Alarm is a 4-in-1 device that provides quadruple the protection with a single installation. This 120-volt AC alarm protects against (4) deadly household threats: fast-flaming fires, smoldering smoke, carbon monoxide and natural gas (or methane). Perfect for new or replacement installations, the MDSCN111 alarm is suitable for houses, apartments and mobile homes. Universal Smoke Sensing Technology responds 87-percent faster to slow smoldering fires and responds quickest to fast-flaming fires. Auto sensitivity calibration provides superior nuisance alarm protection and creates consistency in alarm sensitivity.
This 4-in-1 alarm has additional automatic features including: a self-diagnostics check to ensure proper operation, a sensitivity adjustment for changes in temperature or humidity and an end-of-service life warning that sounds when it's time to replace the battery. The 9-volt alkaline battery (included) continues protection in the event of a power outage. This combination alarm features a front-loading battery drawer for replacing the battery without removing the detector from the bracket. Mount the bracket to any standard wiring junction box and use the large mounting base to cover imperfections in drywall. For maximum protection, install an alarm inside every bedroom, outside every sleeping area and on all levels of the dwelling. The USI Electric MDSCN111 Hardwired Universal Smoke Sensing Smart Alarm comes with a 7 year limited warranty.
- Warranty: 7 year Limited Warranty
- Alarm Power Source: 120 volt hardwired & 9 volt battery backup
- Alarm Sensor Type: Universal Smoke Sensing Technology (Ionization & Photoelectric) & Metal Oxide Carbon Monoxide Sensor
- Manufacturing Credits: ISO 9001 certified factory, UL listed & CSFM listed
- Replaces model MICN109: Uses same wire harness and plug. (Please note: mounting bracket is different.)
- Replaces model USI-7795: Uses same wire harness and plug. (Please note: mounting bracket is different.)
- Product Dimensions (W x H x D): 5.75 x 6.75 x 1.75 in.
- Product Weight: 0.65 lbs.
AC powered smoke alarms with battery backup will chirp indefinitely assuming AC power is present; if battery power is low, or battery is removed; until a fresh battery is installed. Approved replacement batteries are listed on the back of each smoke alarm and in the user's manual.
Certain model smoke alarms with a silence button (designed to silence the alarm during a nuisance alarm) may chirp to indicate the smoke alarm is in the silence mode. The chirp will stop after approximately 8 minutes and the smoke alarm will return to its normal operation.
- If the Alarm is exposed to 400 ppm of CO, it must alarm between 4 and 15 minutes.
- If the Alarm is exposed to 150 ppm of CO, it must alarm between 10 and 50 minutes.
- If the Alarm is exposed to 70 ppm of CO, it must alarm between 60 and 240 minutes.
If battery backup alarms and non-battery backup alarms and accessories are mixed in an interconnect system, all devices without battery backup WILL NOT operate during an AC power failure.
CAUTION: USI alarms and accessories should only be interconnected with other USI alarms and accessories. Connecting devices from another manufacturer to USI devices may result in nuisance alarms, failure to alarm, or damage to one or all of the devices in the interconnect system. All interconnected USI alarms should be powered by the same fuse or circuit breaker. Smoke alarms shall not receive their power from a circuit that is protected by a ground fault circuit interrupter. Improper connection will result in damage to the alarm, failure to operate, or a shock hazard.
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Customers Also Bought
126
Customer Reviews
5
Average score based on 47 reviews
Reviewed: 12/25/2020 by Laura Weisshar
Easy to install connected with the current wiring.
I am pleased.
Reviewed: 12/14/2020 by April Liverman
All of the smoke detectors work good in my home.
Quick Install
Reviewed: 08/25/2020 by Brandon
Replaced existing 10+ year old hardwired USI detectors with no rewiring, just needed to swap the base plate. Quick and easy.
Reviewed: 08/18/2020 by Steve Cannon
I purchased this smoke detector to replace an old one. I bought the same brand and the wires from my old one plugged right in. installation was very simple.
Reviewed: 08/15/2020 by Amanda Duffy
quick shipping and what I expected.
Reviewed: 08/13/2020 by John Miller
Simple to install. Works as specified. Delivered on time.
I installed it myself.
Reviewed: 07/20/2020 by Paul Chauvin
We have gas appliances, so we needed a system that included natural gas detection. Gives us peace of mind.
Good service
Reviewed: 07/16/2020 by Joseph Wyens
Very good service. Product working fine. Delivered on time. Thanks for service
Substitute for Smoke and Fire only
Reviewed: 06/17/2020 by John Earley
Decided when replacing all five of my wired-in smoke and fire alarm to replace sensor closest to my utility room and coincidentally near to my kitchen gas stove top. I had to change mounting base from prior USI 1208 detector to USI 4-in-1. Took the most time figuring out what breaker had the smoke detectors powered on. But after shutting off power the wiring change was a snap with existing wire nuts. Now I have a bit more security for CO and NG detection as well as the remaining four smoke and fire alarms, all inter wired together.
Reviewed: 06/15/2020 by HORACE BOWERS
So far so good. Will be ordering another one
