Protection Patterns
Printed in Hong Kong
Copyright 1995 C&K Systems, Inc.
5-051-316-00
Rev B
C&K is a registered trademark of C&K
Components, Inc. SpreadNet and DUAL TEC
are registered trademarks of C&K Systems, Inc.
All Rights Reserved
TOP VIEW
Wide Angle Lens
30'
SIDE VIEW
Wide Angle Lens
7'6"
35'
Down
Long Range
Intermediate
Lower
Zones
floor
PROTECTION PATTERNS FOR OPTIONAL LENSES
35'
TOP VIEW
Barrier Lens
SIDE VIEW
Barrier Lens
floor
7'6"
35'
4'
SIDE VIEW
Pet-Alley Lens
TOP VIEW
Pet-Alley Lens
The Top View Pet-Alley Lens is the
same as the Top View Wide Angle
Lens.
35'
Retainer
Latch
LENS
Figure 3
SN935-DT
Lens Change
Assembly
Look-Down
Window
Lens
Pins
Retainer
Feet
To change the Fresnel lens:
1. Open the cover and remove the
printed circuit board (PCB). To
remove the PCB, use a small-blade
screwdriver and push down on the
latch at the top of the front housing.
Gently pull the PCB forward hold-
ing the board by the battery holder
(see Figure 1).
2. Depress the retainer latch, and pull
the lens retainer forward. (If nec-
essary, use a small screwdriver to
carefully depress the latch. Avoid
excessive force, or the latch will
break.)
3. Remove the existing lens.
4. Insert the pins of the new lens into
the holes on the lens retainer as
shown.
5. Replace the lens and retainer together (the feet of the retainer fit
into the look-down window groove).
6. Snap the retainer latch back in place.
7. Reassemble the housing.
Changing the Fresnel Lens
NOTE: Two additional lenses are available for these sensors. The pet-alley lens
blocks lower PIR zones to exclude pets from the field of view; the barrier lens blocks
outer zones for narrow applications.
When the pet-alley lens is used, install a look-down mask (provided) over the inside
of the look-down window, and make sure to mount the sensor at a height of 4'.
The optional lenses are available at no charge from your local distributor, or call C&K
Systems, Inc. at (800) 227-8065. Order Part Number 0-000-025-01.
FCC NOTICE
The Model SN935-DT DUAL TEC
®
PIR Transmitter generates and uses radio frequency energy. If
not installed and used in accordance with the manufacturer's instructions, it may cause interference
to radio and television reception. The Passive Infrared (PIR) Transmitter has been tested and found
to comply with the specifications in Part 15 of FCC Rules for Class B Computing Devices and FCC
Part 15 Subpart C, Specifications for Intentional Spread Spectrum Radiators.
If this equipment causes interference to radio or television reception - which can be determined by
turning the equipment on and off - the installer is encouraged to correct the interference by one or more
of the following measures: 1) Reorient the antenna of the radio/television. 2) Connect the AC
transformer to a different outlet so the control panel and radio/television are on different branch
circuits. 3) Relocate the control panel with respect to the radio/television.
If necessary, the installer should consult an experienced radio/television technician for additional
suggestions, or sent for the "Interference Handbook" prepared by the Federal Communications
Commission. This booklet is available from the U.S. Government Printing Office, Washington D.C.,
20402, stock number 004-000-00450-7.
CAUTION: C&K does not support field changes or modifications to any of the SpreadNet RF
equipment unless they are specifically covered in this manual. All adjustments must be made at the
factory under the specific guidelines set forth in our manufacturing processes. Any modification to
the equipment could void the user's authority to operate the equipment and render the equipment in
violation of FCC Part 15, Subpart C, 15.247.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
UL Compliance
For Grade A household burglar alarm and household fire warning system
applications using the C&K System 2316 Control Panel:
All transmitters must be programmed as supervised devices.
Only one transmitting device per zone.
Transmitter Device ID
After the SN935-DT Transmitter has been programmed (as outlined in the
SN900-PROG RF Programming Manual) and tested, fill out the Transmitter
Device I.D. Label (included in the installation package) prior to mounting
the label inside the transmitter.
The following procedure is recommended for mounting the label:
1.
Remove the front cover/PCB assembly of the transmitter.
2.
Remove the adhesive backing from the label and place
the label at the bottom of the rear housing.
3.
Replace the cover.
LENS
RETAINER
Specifications
Range:
35' x 30'
(11 m x 9 m)
PIR fields of view:
standard lens
11 long range
7 intermediate
4 lower
2 look-down
Power requirements:
2 or 4 - 3.6 VDC AA Lithium Batteries
(included)
PIR white light immunity:
4,000 Lux
Frequencies:
center band 2.45 GHz (microwave)
902 - 928 MHz Spread Spectrum
Sensitivity:
2 - 4 steps within field of view
Dimensions:
5" H x 2-7/8" W x 2-5/16" D
(13 cm x 7 cm x 6 cm)
Weight:
10 oz (283.5 g), without batteries
Operating temperature:
32
o
to 140
o
F (0
o
to 60
o
C)
RF immunity:
30 V/m, all mobile bands 10MHz - 1000MHz
RF Emission Standards:
USA:
FCC Part 15
CANADA:
Industry Canada (IC)
Replace Batteries only with
C&K Model # SN33L-BAT
SAFT Model # LS14500, LS6
Tadiran Model # TL-2100 /S
NOTE: Batteries should be replaced
following a low battery indication or every
4 years, whichever occurs first.
LIMITED WARRANTY
Seller warrants its products to be in conformance with its own plans and specifications and to be free from
defects in materials and workmanship under normal use and service for 18 months from the date stamp control
on the product or for products not having a C&K Systems date stamp, for 12 months from the date of original
purchase, unless the installation instructions or catalogue sets forth a shorter period, in which case the shorter
period shall apply. Seller's obligation shall be limited to repairing or replacing, at its option, free of charge for
materials or labor, any part which is proved not in compliance with Seller's specifications or proves defective
in materials or workmanship under normal use and service. This warranty is void if the product is altered or
improperly repaired or serviced by anyone other than C&K Systems factory service. For warranty service,
return the product transportation prepaid to C&K Factory Service, 107 Woodmere Road, Folsom, CA, 95630.
THERE ARE NO WARRANTIES, EXPRESS OR IMPLIED, OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE OR OTHERWISE, WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE
HEREOF. In no case shall Seller be liable to anyone for any consequential or incidental damages for breach
of this or any other warranty, express or implied, or upon any other basis of liability whatsoever, even if the loss
or damage is caused by Seller's own negligence or fault.
Seller does not represent that its product may not be compromised or circumvented; that the product will
prevent any personal injury or property loss by burglary, robbery, fire or otherwise; or that the product will in
all cases provide adequate warning or protection. Buyer understands that a properly installed and maintained
alarm may only reduce the risk of burglary, robbery, or fire without warning, but it is not insurance or a guarantee
that such will not occur or that there will be no personal injury or property loss as a result. CONSEQUENTLY,
SELLER SHALL HAVE NO LIABILITY FOR ANY PERSONAL INJURY, PROPERTY DAMAGE, OR OTHER
LOSS BASED ON A CLAIM THAT THE PRODUCT FAILED TO GIVE WARNING. However, if Seller be held
liable, whether directly or indirectly, for any loss or damage arising under this Limited Warranty or otherwise,
regardless of cause or origin, Seller's maximum liability shall not in any case exceed the purchase price of the
product, which shall be fixed as liquidated damages and not as a penalty, and shall be the complete and
exclusive remedy against Seller.
This warranty replaces all previous warranties and is the only warranty made by C&K Systems on this product.
No increase or alteration, written or verbal, of the obligation of this warranty is authorized.