AIA DIVISION 16 SPECIFICATIONS
SECTION 16950 – OCCUPANCY SENSORS
PART 1. GENERAL
1.01 WORK INCLUDED
A. Contractor's work to include all labor, materials, tools, appliances, control hardware, sensor, wire,
junction boxes and equipment necessary for and incidental to the delivery, installation and furnishing
of a completely operational occupancy sensor lighting control system, as described herein. B. Contractor/Supplier shall examine all general specification provisions and drawings for related
electrical work required as work under Division 16.
C. Contractor shall coordinate all work described in this section with all other applicable plans and
specifications, including but not limited to wiring, conduit, fixtures, HVAC systems and building
1.02 EQUIPMENT QUALIFICATION
A. Products supplied shall be from a single manufacturer that has been continuously involved in
manufacturing of occupancy sensors for a minimum of five (5) years. Mixing of manufacturers shall
not be allowed.
B. All components shall be U.L. listed, offer a five (5) year warranty and meet all state and local
applicable code requirements.
C. Products shall be manufactured by an ISO 9002 certified manufacturing facility and shall have a
defect rate of less than 1/3 of 1%.
D. Wall switch products must be capable of withstanding the effects of inrush current. Submittals shall
clearly indicate the method used.
1.03 SYSTEM DESCRIPTION
A. The objective of this section is to ensure the proper installation of the occupancy sensor based
lighting control system so that lighting is turned off automatically after reasonable time delay when a
room or area is vacated by the last person to occupy said room or area.
B. The occupancy sensor based lighting control shall accommodate all conditions of space utilization
and all irregular work hours and habits.
C. Contractor shall warrant all equipment furnished in accordance to this specification to be
undamaged, free of defects in materials and workmanship, and in conformance with specifications.
The supplier’s obligation shall include repair or replacement, and testing without charge to the owner,
all or any parts of equipment which are found to be damaged, defective or non-conforming and
returned to the supplier. The warranty shall commence upon the owner's acceptance of the project.
Warranty on labor shall be for a minimum period of one (1) year.
A. Manufacturer shall substantiate conformance to this specification by supplying the necessary
documents, performance data and wiring diagrams. Any deviations to this specification must be
clearly stated by letter and submitted.
B. Submit a lighting plan clearly marked by manufacturer showing proper product, location and
orientation of each sensor.
C. Submit any interconnection diagrams per major subsystem showing proper wiring. D. Submit standard catalog literature which includes performance specifications indicating compliance
to the specification.
AIA Division 16 Specification
Section 16950 Occupancy Sensors
E. Catalog sheets must clearly state any load restrictions when used with electronic ballasts.
1.05 SYSTEM OPERATION
A. It shall be the contractor's responsibility to make all proper adjustments to assure owner's
satisfaction with the occupancy system, or;
B. Factory Startup (Optional): It shall be the manufacturer's responsibility to verify all proper
adjustments and train owner's personnel to ensure owner's satisfaction with the occupancy system.
This service is provided at an additional cost.
PART 2. SPECIFIC REQUIREMENTS
2.01 ACCEPTABLE MANUFACTURERS
A. Watt Stopper or Pre-approved equal: For pre-approval, provide all the information listed under
section 1.04A and 1.04D a minimum of ten (10) working days prior to initial bid date. B. The listing of any manufacturer as "acceptable" does not imply automatic approval. It is the sole
responsibility of the electrical contractor to ensure that any price quotations received and submittals
made are for sensors which meet or exceed the specifications included herein.
A. All products shall be Watt Stopper product numbers:
1. Ceiling sensors: WT-605, WT-600, WT-1105, WT-1100, WT-2205, WT-2200, WT-2250, WT-
2255, WP-605, WP-1105, WP-2255, WP-2205, W-500A, W-1000A, W-2000A, W-2000H, UT-
300, UT-305, UT-355, WPIR, DT-200, DT-205, DT-300, DT-305, DT-355, CX-100, CX-105,
CI-200, CI-205, CI-300, CI-305, CI-355, CI-12, CI-24
2. Wall switch sensors: PW-100, PW-100-24, PW-200, WS-200, WD-170, WD-180, WD-270,
WD-280, WN-100-120, WN-100-277, UW-100, UW-100-24, UW-200, DW-100, DW-100-24,
3. Power and Auxiliary Packs: BZ-50, BZ-100, BZ-150, LC-100, C120E-P, C277E-P, S120/27-P,
4. HID Control: DM-100, DM-105, DM-105-WP
5. Outdoor sensors: EW-100, EW-200, EWF-105, EWF-205, EW-105-24, EW-205-24, EN-100,
6. Low Temperature: CB-100
7. Digital Time Switches: TS-400, TS-400-24
8. Automatic Control Switch: AS-100
B. Wall switch sensors shall be capable of detection of occupancy at desktop level up to 300 square
feet, and gross motion up to 1000 square feet.
C. Wall switch sensors shall accommodate loads from 0 to 800 watts at 120 volts; 0 to 1200 watts at
277 volts and shall have 180? coverage capability.
D. Wall switch products shall utilize Zero Crossing Circuitry which increases relay life, protects from the
effects of inrush current, and increases sensor’s longevity.
E. Wall switch sensors shall have no leakage current to load, in manual or in Auto/Off mode for safety
purposes and shall have voltage drop protection.
F. Where specified, wall switch sensors shall provide a field selectable option to convert sensor
operation from automatic-ON to manual-ON.
G. Where specified, vandal resistant wall switch sensors shall utilize a hard lens with a minimum
1.0mm thickness. Products utilizing a soft lens will not be considered.
H. Passive infrared sensors shall utilize Pulse Count Processing and Detection Signature Processing to
respond only to those signals caused by human motion.
AIA Division 16 Specification
Section 16950 Occupancy Sensors
I. Passive infrared sensors shall provide high immunity to false triggering from RFI (hand-held radios)
and EMI (electrical noise on the line).
J. Passive infrared sensors shall have a multiple segmented Fresnel lens, in a multiple-tier
configuration, with grooves-in to eliminate dust and residue build-up.
K. Where specified, passive infrared ultrasonic and dual technology sensors shall offer daylighting
footcandle adjustment control and be able to accommodate dual level lighting.
L. Dual technology sensors shall be wall mounted, corner mounted or ceiling mounted in such a way
as to minimize coverage in unwanted areas.
M. Dual technology sensors shall consist of passive infrared and ultrasonic technologies for occupancy
detection. Products that react to noise or ambient sound shall not be considered. N Ultrasonic sensors shall utilize Advanced Signal Processing to adjust the detection threshold
dynamically to compensate for constantly changing levels of activity and air flow throughout
O. Ultrasonic operating frequency shall be crystal controlled at 25 kHz within ? 0.005% tolerance, 32
kHz within ? 0.002% tolerance, or 40 kHz ? 0.002% tolerance to assure reliable performance and
eliminate sensor cross-talk. Sensors using multiple frequencies are not acceptable. P. All sensors shall be capable of operating normally with electronic ballasts, PL lamp systems and
rated motor loads.
Q. Coverage of sensors shall remain constant after sensitivity control has been set. No automatic
reduction shall occur in coverage due to the cycling of air conditioner or heating fans. R. When specified, sensors shall utilize SmartSet? technology for automatically adjustable time delay
and sensitivity settings.
S. All sensors shall have readily accessible, user adjustable settings for time delay and sensitivity.
Settings shall be located on the sensor (not the control unit) and shall be recessed to limit tampering. T. In the event of failure, a bypass manual override shall be provided on each sensor. When bypass is
utilized, lighting shall remain on constantly or control shall divert to a wall switch until sensor is
replaced. This control shall be recessed to prevent tampering.
U. All sensors shall provide an LED as a visual means of indication at all times to verify that motion is
being detected during both testing and normal operation.
V. Where specified, sensor shall have an internal additional isolated relay with Normally Open,
Normally Closed and Common outputs for use with HVAC control, Data Logging and other control
options. Sensors utilizing separate components or specially modified units to achieve this function
are not acceptable.
W. All sensors shall have UL rated, 94V-0 plastic enclosures.
X. Outdoor sensors shall have UL 773A ratings. EWF outdoor sensors shall additionally have UL 1571
Y. EW-100 outdoor sensors shall cover up to 35 feet, with a field of view of 180 degrees. EW-200 shall
cover up to 52.5 feet, with a field of view of 270 degrees. EN-100 outdoor sensors shall cover up to
35 feet, with a field of view of 90 degrees. EN-200 outdoor sensors shall cover up to 100 feet, with a
long range lens view.
Z. EWF outdoor sensors shall include polycarbonate lamp holders that accept PAR 20 or 38 lamps up
to 150W per lamp.
AA. Outdoor sensors shall have an operating temperature range of -40?F to +130?F.
BB. To ensure complete protection from weather elements and exposure, outdoor sensors shall be
manufactured with precision double-shot tooling and contain internal silicon gaskets. CC. HID controller shall be compatible with all types of High Intensity Discharge (HID) lamps, including
Metal Halide, Metal Halide Pulse Start, and High Pressure Sodium.
DD. HID controller shall operate with HID lamps utilizing Constant Wattage Autotransformer (CWA) type
EE. To avoid lamp damage during the HID power up period, the HID controller shall maintain a full light
level during lamp warm up for 15 minutes.
AIA Division 16 Specification
Section 16950 Occupancy Sensors
FF. To maximize lighting control scenarios, the HID controller shall be compatible with any 24 VDC
controlling device, such as occupancy sensors, time switches, control panels, or photocells. GG. The HID controller shall be capable of linking to other HID control modules to enable effective
multizone control. More than 100 individual devices shall be capable of being connected.
2.03 CIRCUIT CONTROL HARDWARE - CU
A. Control Units - For ease of mounting, installation and future service, control unit(s) shall be able to
externally mount through a 1/2" knock-out on a standard electrical enclosure and be an integrated,
self-contained unit consisting internally of an isolated load switching control relay and a transformer
to provide low-voltage power. Control unit shall provide power to a minimum of two (2) sensors. B. Relay Contacts shall have ratings of:
13A - 120 VAC Tungsten
20A - 120 VAC Ballast
20A - 277 VAC Ballast
C. Control wiring between sensors and controls units shall be Class II , 18-24 AWG, stranded U.L.
Classified, PVC insulated or TEFLON jacketed cable suitable for use in plenums, where applicable. C. Minimum acceptable wire gauge from the circuit control hardware relays shall be #14 AWG.
PART 3. EXECUTION
A. It shall be the contractor's responsibility to locate and aim sensors in the correct location required for
complete and proper volumetric coverage within the range of coverage(s) of controlled areas per the
manufacturer's recommendations. Rooms shall have ninety (90) to one hundred (100) percent
coverage to completely cover the controlled area to accommodate all occupancy habits of single or
multiple occupants at any location within the room(s). The locations and quantities of sensors shown
on the drawings are diagrammatic and indicate only the rooms which are to be provided with
sensors. The contractor shall provide additional sensors if required to properly and completely cover
the respective room.
B. It is the contractor’s responsibility to arrange a pre-installation meeting with manufacturer's factory
authorized representative, at owner's facility, to verify placement of sensors and installation criteria. C. Proper judgment must be exercised in executing the installation so as to ensure the best possible
installation in the available space and to overcome local difficulties due to space limitations or
interference of structural components. The contractor shall also provide, at the owner's facility, the
training necessary to familiarize the owner's personnel with the operation, use, adjustment, and
problem solving diagnosis of the occupancy sensing devices and systems.
3.02 FACTORY COMMISSIONING (OPTIONAL)
A. Upon completion of the installation, the system shall be completely commissioned by the
manufacturer's factory authorized technician who will verify all adjustments and sensor placement to
ensure a trouble-free occupancy-based lighting control system. This service is provided at an
B. The electrical contractor shall provide both the manufacturer and the electrical engineer with ten
working days written notice of the scheduled commissioning date. Upon completion of the system
fine tuning the factory authorized technician shall provide the proper training to the owner's
personnel in the adjustment and maintenance of the sensors.