4 Pack of USI 4-in-1 Hardwired Smart Alarms with Smoke, Fire, Carbon Monoxide and Gas Detection
- 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.
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.
- 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.)
- Packaging: Easy Open Box Packaging
- Product Dimensions (W x H x D): 5.75 x 6.75 x 1.75 in.
- Product Weight: 0.65 lbs.
- MDSCN111 USI Alarm Manual
- MDSCN111 Alarm Spec Sheet
- More About Universal Smoke Sensing Technology
- MDSCN111 CSFM Listing
If you are interested in ordering a large quantity of items you may qualify for volume pricing discounts. Volume Discount Pricing is a great way for customers to save big on large, bulk orders of most items available in our store. Please send a bulk order request to our friendly sales staff so they may create a quote and provide personal service for your order! You will receive a response within 1-2 business days and our office hours are Monday through Friday, 8am-5pm CST.
- Let us know what products & the quantities you are interested in.
- Get a detailed quote from a dedicated sales rep.
- Our warehouse ships directly to you.
- You enjoy the savings & are now a preferred customer.
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USI 4-in-1 Hardwired Smart Alarm with Smoke, Fire, CO and Gas Detection Reviews
Yes, after placing my order I received my USI 4-in 1 smoke alarm in a very short amount of time. Much appreciated.
Your product is good, good thing I can find it on line, otherwise I would have had to change every unit thru the complex I give you all a big 5
Purchased this item to replace a unit previously installed by the builder of our home and that had reached its life end. The unit was extremely easy to install. Only had to change out the mounting plate. Michelle in customer service was extremely helpful when I called in to inquire about the new model number for this unit.
These 2 detectors replaced 2 older multi-sensor detectors that were reaching end of life. Everything needed came in the new boxes including mounting plates and wire assemblies. Smooth install in about 5 minutes each
I needed a whole house replacement for new construction detectors that were at end of life and got a good deal on upgraded 10 year battery models and got a few more carbon monoxide detectors to cover every bedroom and added a natural gas detector. Replacing the ceiling mount bracket and a couple wiring pig tails was not too hard. Very happy to not have to replace batteries and to have the best protection for my family.
Very happy with my sales representative and the order I received.
I am so comfortable knowing that the alarms will detect all the hazards mentioned on the Review Heading. We have installed these on the three wood framed homes we have had since 1977 through today. While we have not had them go off in “anger†when we were asleep but we fell much better knowing we have these alarms on every room especially now that we are on our late 70s. They have each lasted over the 7 years stated and generally 8 years or more. We have also had a couple of friends during this who had fires in their homes which were not detected until the fires were really going but they luckily were unhurt but the damage was significant but not too bad. We have had gas cook stove where the pan overflowed and the gas flames were doused and gas was going into the house undetected. Thank God it was detected in time before we were gassed. It is so easy to be playing with the small kids and not smell the gas on another room in the house. A Neighbour jumped over our 6 foot fence between our yards as he realised the alarm was serious. These incidents detected early saved lives / damage to our kitchen. So thanks for the 4 in 1 alarms.
I purchased two 4 in 1 detectors. Replaced my old detectors and networked together seamlessly.
good product and went on easy
Easy to install