USI Electric Hardwired 2-in-1 Universal Smoke Sensing Smoke and Fire Alarm with Battery Backup (MDS107)
| Regular: $29.95 |
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| Price: $19.95 | |||
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- View Video On This Product- Universal Smoke Sensing Smoke and Fire Alarm
- Responds 87% Faster to Slow Smoldering Fires
- Responds Quickest to Fast Flaming Fires
- 120 Volt AC Wired-In + 9 volt Alkaline Battery Operated
- Loud 85 db Alarm
- Microprocessor Eliminates Nuisance Alarms
- New Universal Smoke Sensing Technology
- Power and Alarm LED's
- Test/Silence Button
- Product End-of-Service Life Warning
- 2 Tamper Resistant Locking Features
- Battery Activation Tab
- Quick Draw Battery Drawer
- Interconnectable with up to 24 Compatible Devices
- Ideal for Homes, Apartments and Mobile Homes
- Listed to UL217 Standard
- California State Fire Marshal Approved
- 10 Year Limited Warranty
This 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 alarm features a front-loading battery drawer for replacing the battery without removing the alarm 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 MDS107 Hardwired Universal Smoke Sensing Smoke and Fire Alarm comes with a 10 year limited warranty.
- Warranty: 10 year Limited Warranty
- Alarms Power Source: 120 volt hardwired with battery backup (Battery Included)
- Alarm Sensor Type: Universal Smoke Sensing Technology (Ionization & Photoelectric)
- Manufacturing Credits: ISO 9001 certified factory, UL listed & CSFM listed
- Product Dimensions (W x H x D): 5.75 x 6.70 x 1.75 in.
- Product Weight: 0.67 lbs.
Average Rating Based on 18 reviews: 
(5)
Replacement - 01/01/2019
Reviewer: Pietro Dova
Nice to see that the pin connection remains unchanged from 2011. But for some reason the clamping system has changed from prior model so the ceiling mount needs to be replaced with the new one provided to re-attach the unit to the ceiling.
Easy install - 12/22/2018
Reviewer: Jake Repash
Easy install and so far have worked good without any false alarms.
Replacement Alarms - 12/08/2018
Reviewer: Wayne Jertson
I'm very pleased with my new Smoke/Fire alarms. Easy to install and test. Good product!
Replaced 6 Smoke and Fire Alarms - 11/02/2018
Reviewer: Bruce E. Stuck
I discovered the USI Model 1204 Smoke and Fire Alarm Detectors in my home were 5 years beyond their 10 year lifetime! From information on the detector, I contacted USI, Inc. and was promptly sent an email that contained a video link on replacing the detectors. The link answered all my questions. Hence, I immediately ordered 6 Ea. MDS107 Smoke and Fire Detectors that arrived about 5 days later. I replaced and tested all 6 and they worked perfectly in our alarm system. The efficient assistance provided by Michele Metcalfe at USI, Inc., Owings Mill, Md was superb. Thanks for excellent customer service.
- 10/10/2018
Reviewer: Eugene Smith
First time ordering but was very happy with the quality service.
Happy Customer - 10/01/2018
Reviewer: A.R.
I recently purchased this item directly from USI.
Product arrived as expected and in the condition described on their website.
Excellent Value..... Thanks
Pretty Much Plug and Play - 09/28/2018
Reviewer: Greg Griffith
Very pleased with warranty support from my old house. I changed out all outdated models in my new home. Simple swap out from one manufacturer to another. 2 mounting screws and a pigtail. Also comes with battery so it's good to go.
New Smoke Alarms - 09/19/2018
Reviewer: Kevin Kaari
I recently bought 10 new hardwired detectors to replace my existing USI detectors that aged out. The new ones installed quick and easy. No issues with any of them. I am happy with my purchase.
Replace old units - 09/15/2018
Reviewer: Chester Hewitt
Installation of new smoke and fire detectors was simple and easy, mounted to existing boxes with ease and rewireing was also simple.
- 09/10/2018
Reviewer: Joseph Armstrong
Well satisfied with my purchase! Four units boxed together for shipping. New 9-volt battery included in each unit. Relatively easy to replace / install. MDS107 is well designed and engineered. Battery drawer is a wonderful design change over my original USI detector. Original detectors manufactured in 1999 or 2000. If offered, I would rate my MDS107s as a 6 - Outstanding.
Read All Reviews
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 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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