P/N 15654 (ML) • REV D • ISS 23AUG17    3 / 16 
5.  For latching LED: open J3 and provide a power reset by 
removing power and resetting the LED. 
6.  Once installed, check that the alarm is received at the 
control panel. 
How test mode works 
Test mode is activated by the hand-held tester when the tester 
is held directly over the microphone and set off. The detector’s 
LED will blink continuously for one minute. During this time, the 
installer can test the unit using the instructions above. When 
the system is armed and the GS903/913 trips to an alarm 
condition, the LED will latch solid for four seconds and then 
revert back to a one minute test mode. At the end of one 
minute, the LED will extinguish if in “set up LED mode,” or the 
LED will latch if set for “latching LED”. Open spring clip for 
latching LED. 
Range of coverage 
The GS903N/913N detectors are omni-directional, providing 
360° coverage. Coverage is measured from the detector to the 
point on the glass farthest from the detector. The detector can 
be mounted as close as 1 m from the glass. 
Mounted on opposite wall or adjoining walls, range is: 
•  7.5 m for plate glass 
•  6 m for tempered, laminated and wired glass 
Mounted on the ceiling, maximum range is: 
•  7.5 m for plate glass 
•  6 m for tempered, laminated and wired glass 
Mounted on same wall, maximum range is 4.5 m for all types 
of glass. 
For armour-coated glass, mount detector no more than 3.65 m 
from glass. 
Recommended glass size: Minimum 0.3 x 0.6 m or larger. 
Glass thickness: 
•  Plate: 2.4 to 6.4 mm 
•  Tempered: 3.2 to 6.4 mm 
•  Wired: 6.4mm 
•  Laminated: 3.2 to 6.4mm 
For best detection, avoid installing in 
•  Rooms with lined, insulating or sound deadening curtains 
•  Rooms with closed wooden window shutters inside 
Specifications 
Current consumption: 
  GS903N 
  GS913N 
 
12 mA typical, 25 mA max. 
15 mA typical, 25 mA max. 
NC, open 4 seconds on alarm 
Maximum loop rating (relay or 
tamper loop) 
10 V/m from 80 MHz to 2.7 GHz 
Omni-directional electret 
How to order 
•  GS903N: Surface mount (white) 
•  GS913N: Recessed (white) 
•  GS905: Hand-held tester (white) 
Regulatory information 
PLACED ON THE MARKET BY: 
UTC Fire & Security Americas Corporation, Inc. 
3211 Progress Drive, Lincolnton, NC, 28092, USA 
AUTHORIZED EU REPRESENTATIVE: 
UTC Fire & Security B.V. 
Kelvinstraat 7, 6003 DH Weert, Netherlands 
These products are intended for sale to, and 
installation by, an experienced security 
professional. UTC Fire & Security cannot provide 
any assurance that any person or entity buying its 
products, including any “authorized dealer,” is 
properly trained or experienced to correctly install 
security related products. 
For more information on product warnings, refer 
to www.utcfssecurityproducts.eu/productwarning/ 
or scan the code. 
European Union 
directives 
UTC Fire & Security hereby declares that this 
device is in compliance with the applicable 
requirements and provisions of the Directive 
2014/30/EU, 2014/35/EU, and 2011/65/EU. For 
more information see www.utcfireandsecurity.com 
or www.interlogix.com. 
2012/19/EU (WEEE directive): Products marked 
with this symbol cannot be disposed of as 
unsorted municipal waste in the European Union. 
For proper recycling, return this product to your 
local supplier upon the purchase of equivalent 
new equipment, or dispose of it at designated 
collection points. For more information see: 
www.utcfssecurityproducts.eu/recycle/ 
Contact information 
www.utcfireandsecurity.com or www.interlogix.com 
For customer support, see www.interlogix.com/customer-
support