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Minor Motion, Ultrasonic

Major Motion, Ultrasonic

Maximum coverage area may

vary somewhat according to room

shape and the presence of obstacles.

The NEMA WD 7 Guide and robotic

method were utilized to verify

coverage patterns.

24’

(7.3 mm)

Minor Motion, IR

Major Motion, IR

20’

(6 mm)

8’

(2.4 mm)

8’

(2.4 mm)

24’

(7.3 mm)

20’

(6 mm)

0

10 ft

(3 mm)

12’

(3.7)

12’

(3.7)

6 ft

(1.7 mm)

15 ft

(4.6 mm)

24 ft

(7.3 mm)

50 ft

(15.3 mm)

Model # AHAWC-DT-120W

•   Read all instructions on both sides of this sheet 

first

•  Install in accordance with ALL local codes

•  For indoor use only

•   For Use with Eaton Switchpacks & Systems Only

•   Do not run any Eaton Low Voltage Wiring in the 

same conduit as power conductors

General Information  

Technology:

 Passive Infrared (PIR) and Ultrasonic (US)

Power Requirements:

Input:

•  10-30 VDC from Eaton Switchpack or Eaton system. 

Maximum current needed is 25mA per sensor

Output:

•  Open collector output to switch up to ten Eaton 

Switchpacks. BAS with Isolated Form C Relay (-R 
model) Isolated Form C Relay Ratings: 1A 30VDC/VAC

Time Delays:

 Self-Adjusting, 15 seconds/test (10 min Auto) 

or Selectable 5, 15, 30 minutes

Coverage:

 1200 sq. ft.

Light Level Sensing:

 0 to 300 foot-candles (-R model)

Operating Environment:

•  Temperature: 32° F – 104° F (0° C – 40° C)
•  Relative Humidity: up to 90% non-condensing

Housing:

 

•  Medium impact injection molded housing
•  Polycarbonate resin complies with UL 94V0

Size:

 4.4" x 3.4" x 2" (112 mm x 86.4 mm x 50.8 mm)

LED Indicators:

  Red indicates PIR detection; Green 

indicates Ultrasonic detection

Specifications  

Description  

The AHAWC-DT Wall/Corner Mount Low Voltage Occupancy Sensor is a Passive Infrared (PIR) and Ultrasonic (US) motion 

sensing lighting control, used for energy savings and convenience. PIR is used to turn the lights ON and then either or both 
technologies are used to keep the lights ON. When motion is detected, the blue wire is electronically connected to the red 
wire, energizing the relay in the switchpack to turn ON the load. If vacancy is detected, the blue wire is disconnected from 
the red, causing the relay to open turning OFF the load. The red lead is 10-30 VDC supply, the black lead is common and the 
blue is the relay control.

The sensor includes self-adaptive technology that continually adjusts to conditions by adjusting sensitivity and time delay 

in real-time.

The Daylighting feature (-R model only) prevents lights from turning ON when the room is adequately illuminated by 

natural light.

The Walk-Through feature maximizes energy savings by not leaving the lights ON after momentary occupancy. The sensor 

will switch the lights ON when it detects a person entering the area. If the sensor does not continue to detect motion 30 
seconds following the initial activation, it will automatically go to a shorter 2 minute time delay.

In Automatic ON Mode, the lights turn ON when a person enters the room. In Manual On Mode, the lights are turned ON 

by activating a momentary switch that is connected to the sensor. When used with 2 level lighting  
(-R model only), bi-level Automatic ON can be achieved which allows Zone 1 to come ON automatically upon occupancy. 
Zone 2 does not come ON unless the occupant presses the optional momentary switch.

Location  

The maximum coverage area may vary somewhat according to room shape and 

the presence of obstacles. Follow the coverage diagram concerning major and minor 
motion coverage. Decrease total coverage area by 15% for “soft” rooms (for example, 
heavy draperies or heavy carpeting). The sensor must have a clear view of the area 
to be controlled. The sensor will not “see” through glass. Mounting height should not 
exceed 12 feet. Optimum mounting height is 10 feet. Mount the sensor so the grilles 
face the open portion of the room and are not facing a nearby wall, door, window or 
other obstructing object. Avoid pointing into hallways. To prevent false activation, the 
sensor should be mounted away from the air supply duct a minimum of 4 to 6 feet. 
Mounting at fixture height is most effective. For typical placement refer to Location 
Diagram.

Installation  

The AHAWC-DT-120W can be mounted to the wall, ceiling, junction box, or round fixture with raceway.

Wiring  

CAUTION: Before installing or performing any service on a Eaton system, the power MUST be turned OFF at the 

branch circuit breaker. According to NEC 240-83(d), if the branch circuit breaker is used as the main switch for a 

fluorescent lighting circuit, the circuit breaker should be marked “SWD”. All installations should be in compliance 

with the National Electric Code and all state and local codes.

NOTE REGARDING COMPACT FLUORESCENT LAMPS: The life of some compact fluorescent lamps (CFLs) is shortened by 

frequent automatic or manual switching. Check with CFL and ballast manufacturer to determine the effects of cycling.

1. Make sure power is turned OFF at the branch circuit breaker.
2. Wire units as shown in wiring diagrams per applicable voltage requirements. (Use twist-on wire connectors for all 

connections) CAP ALL UNUSED WIRE LEADS.

3. Mount unit to wall, ceiling, junction box or round fixture with raceway.
4. Turn power back ON at the branch circuit breaker and wait two minutes for the unit to stabilize.
5. Make necessary adjustments. (See Checkout and Adjustments section)

Occupancy Sensor Mounted to Wallboard

Occupancy Sensor Mounted to Round Fixture with Raceway 

Occupancy Sensor Mounted to Octagon Box

Occupancy Sensor Mounted to Drop Ceiling

Location Diagram

Coverage  

Occupancy Sensor Mounted to Octagon Box with Mud Ring

SENSOR WIRE LEAD LEGEND

Black     (Common)
Red 

   (10-30 VDC)

Blue 

   (Control)

Yellow     (Control)
Brown     (Switch-Blue Lead Control)
Brown/White    (Switch-Yellow Lead Control)
Sensor’s Isolated Relay
Orange     (Normally Open)
Gray 

   (Common)

Purple     (Normally closed)

Yellow    

Blue 

  

Red 

   

Black    

  

Recommended Wire: 18-3 AWG stranded non-shielded

Brown/White    

Brown     

Gray

Purple    

Orange  

Optional momentary switch-
Blue control lead-manual ON/OFF

To Additional Sensors.
Maximum of 5 sensors
per switchpack.

Switchpack

Blue

Load 1

White

**Hot

Blue

Hot

Neutral

Line

**Use Black Lead for 120 VAC
   Use Orange Lead for 277 VAC
   Cap Unused Lead Black (Common)

Red (15 VDC)

Blue (Control)

One Sensor, One Switchpack

9850-000550-00

Installation Instructions

Dual Technology Wall/Corner Mounted Low 

Voltage Occupancy Sensor

Arrow Hart

Printed in Malaysia

Eaton Wiring Devices

203 Cooper Circle

Peachtree City, GA 30269

United States

Eaton.com

Eaton.com/arrowhart

Electrical Sector

Canada Operations

5925 McLaughlin Road

Mississauga, Ontario, L5R 1B8

EatonCanada.ca

Mexico Operations

Carr. Tlalnepantla -

Cuautitlan Km 17.8 s/n

Col. Villa Jardin esq.

Cerrada 8 de Mayo

Cuautitlan, Mexico CP 54800

Eaton.mx

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