4.4
Installation Guide for DS937
Ceiling Mounted, Passive Infrared (PIR)
Intrusion Detectors
1.0 Description
The DS937 is a low-profile, ceiling-mount Passive Infrared Intrusion detector that provides a 360° coverage pattern. The low profile
design provides a recessed-mount look, even when surface mounted. It is easy to install with access to wiring and programming options
available without removing the detector from the ceiling. With a 50 ft. (14 m) diameter coverage pattern, it is an ideal choice for applications
that require ceiling mounting and spot or 360° detection.
2.0 Specifications
• Input Power:
9 to 30 VDC; 7.5 to 24 VAC.
• Current Draw:
17 mA maximum at 12 VDC.
• Standby Current:
Intended for connection to DC power
supplies capable of supplying power if
primary power fails.
• Coverage:
50 detection zones.
• Detectable Speed:
0.5 to 15 ft./s (0.2 to 5.0 m/s)
• Alarm Contacts:
NC (Normally Closed) dry contacts, rated
500 mA, 10 W max. @ 30 VDC.
• Tamper Switch:
NC Integral, Cover-Activated
• Sensitivity Selection: Field selectable for 1, 2, 3, or 4 pulse
counts.
• Storage and
+14°F to +122°F (-10°C to +50°C).
Operating
Temperature:
• Humidity:
0 to 95% non-condensing
• Dimensions:
5 inches diameter by 1.5 inches high
(125 mm diameter x 38 mm high)
3.0 Avoid:
4.0 Mounting
4.1 Use the mounting template to position and drill the wiring
hole and starter holes for the two mounting screws provided with
the detector.
4.2 Install the provided mounting screws leaving enough
space between the screwhead and the mounting surface to
allow placement of the detector base.
Mounting Height
Detection Area
Maximum Diameter
8 ft. (2.4 m)
10 ft. (3.0 m)
12 ft. (3.7 m)
38 ft. (11.6 m)
46 ft. (14.0 m)
50 ft. (15.2 m)
Only apply power
after all connections
have been made and
inspected.
Connect wires to the
Terminal Block by passing
them through the Wiring
Passage.
Alarm Output
(Normally Closed)
Tamper Switch
(Normally Closed)
Alarm Memory
First To Latch
Power Input
(nonpolar)
1. Remove the Outer Cover Ring (may be pried
loose with a small flatbladed screwdriver).
2. Loosen the cover screw.
3. Turn the cover dome counterclockwise and lift
it off the detector.
4.3 Mount the detector base
4. Slide the detector over the mounting
screws.
5. Rotate the detector clockwise until the slots
firmly engage the mounting screws.
6. Tighten the mounting screws.
Mounting
Outdoors
Moving
Objects
Pets and
Small Animals
Direct Hot or
Cold Drafts
Heat Sources
Windows and
Uninsulated Walls
Air Conditioning
Outlets
Water or
Oil Vapor
Direct Exposure
to Sunlight
1. Pry here if
necessary
2. Loosen
Cover Screw
3. Rotate Cover
to unlock
Mounting Holes
