288-3609-04
©2020 UNIVERSAL SECURITY INSTRUMENTS, INC., Rev. 03/2020 CD
Printed in China
MODEL MP116S TEN-YEAR LIMITED WARRANTY
USI Electric, Inc. /Universal Security Instruments, Inc. (“USI”) warrants this product to be
free from defects in material and workmanship for a period of 10 (ten) years from the date
of purchase.
This warranty shall not apply to any batteries used in the product or to any damage
which may be caused by such batteries. This warranty applies only to the original consumer
purchaser and only to products used in normal residential use and service. If this product is found
to be defective, USI’s only obligation, and your exclusive remedy, is the repair or replacement of
the product, at USI’s discretion, provided the product has not been damaged through misuse,
abuse, accident, modifications, alteration, neglect or mishandling. This Warranty shall not apply
to any product which is found to have been improperly installed, set-up, or used in any way not in
accordance with the instructions supplied with the product.
ALARM RETURNS
For replacement of this alarm under the terms of this Warranty, contact the Customer Service
Department at 800-390-4321 extension 238 to obtain the current postage and handling fees. USI
does not warrant, and specifically disclaims any warranty, whether express or implied, of fitness for
a particular purpose, other than the warranty contained herein. No implied warranty on this product,
created by state law, shall extend beyond the term of this warranty unless such law otherwise
provides. USI specifically disclaims any liability and shall not be liable for any consequential or
incidental loss or damage, including, but not limited to, damages to any equipment with which this
product is used. Some states do not allow the exclusion or limitation of incidental or consequential
damages, so the above limitations or exclusions may not apply to you. No agent, representative,
dealer, or employee of the company has the authority to increase or alter the obligations or terms
of this Warranty. This Warranty gives you specific legal rights and you may also have other rights
which vary from state to state. This Warranty is only valid for merchandise purchased from outlets
in the United States and Canada. This warranty expires upon product end-of-service life signal.
11407 Cronhill Drive, Suite A
Owings Mills, Maryland 21117 USA
www.UsiElectric.com
REPAIRS AND SERVICES
If the smoke alarm is defective in any way, do not tamper with the smoke alarm. Return the smoke
alarm for servicing. (See warranty for instructions or in-warranty returns.) There will be a service
charge for repairing out of warranty smoke alarms.
THIS PRODUCT CONFORMS TO UL 217 STANDARD FOR SAFETY
BY UNDERWRITERS LABORATORIES, INC.
OPERATIONAL SUMMARY (continued)
RECOMMENDATION
HORN
RED LED
GREEN LED
CONDITION
RECOMMENDATION
ALARM AUDIBLE & VISUAL SIGNALS
Low Battery
2 Chirps approx
every 60 seconds
Blinks On once
approx every 2
minutes
Stays On
Deactivate alarm (see User's Manual "ALARM
DEACTIVATION" section. Replace alarm
immediately.
Product End-of-Service
Life signal
2 Chirps approx
every 60 seconds
Blinks On once
approx every 2
minutes
Stays On
Deactivate alarm (see User's Manual "ALARM
DEACTIVATION" section. Replace alarm
immediately.
Sensor Trouble Signal
3 Chirps approx
every 60 seconds
Blinks on approx.
every 2 minutes
Off
Reset the alarm. If this does not clear the problem,
replace alarm.
