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Wiring

WARNING! Shock Hazard.

 May result in serious injury or death. 

Turn power OFF at circuit breaker before installing the unit.

1

Turn power OFF

I

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®

Dual Technology Sensor Switch 

Installation Guide

Lighting

120 – 277  V

~

  50 / 60 Hz  6 A

Fan

120 V

~

  50 / 60 Hz  4.4 A  1/6 HP

Combined lighting and fan load

120 V

~

  50 / 60 Hz  4.4 A

MS-A102

Occupancy

®

Limited Warranty 

(Valid only in U.S.A., Canada, Puerto Rico, and 

the Caribbean). Lutron will, at its option, repair or replace any unit 

that is defective in materials or manufacture within five years after 

purchase. For warranty service, return unit to place of purchase or 

mail to Lutron at 7200 Suter Rd., Coopersburg, PA 18036-1299, 

postage pre-paid. This warranty is in lieu of all other express 

warranties, and the implied warranty of merchantability is limited to 

FIVE years from purchase. This warranty does not cover the cost 

of installation, removal or reinstallation, or damage resulting from 

misuse, abuse, or damage from improper wiring or installation. This 

warranty does not cover incidental or consequential damages. 

Lutron’s liability on any claim for damages arising out of or in 

connection with the manufacture, sale, installation, delivery, 

or use of the unit shall never exceed the purchase price of the 

unit.

 This warranty gives you specific legal rights, and you may 

have other rights which vary from state to state. Some states do 

not allow the exclusion or limitation of incidental or consequential 

damages, or limitation on how long an implied warranty may last, 

so the above limitations may not apply to you.
Lutron and Maestro are registered trademarks of Lutron 

Electronics Co., Inc. 

© 2014 Lutron Electronics Co., Inc.

Major motion coverage:  

30 ft × 30 ft (9 m × 9 m) [900 ft

2

 (81 m

2

)]

Minor motion coverage:  

20 ft × 20 ft (6 m × 6 m) [400 ft

2

 (36 m

2

)] 

P/N 032460  Rev. A

07/2014

Troubleshooting

Symptoms

Possible Causes/Solutions

After installation:

• Sensor switch does 

not respond to button 

presses

OR

• Sensor switch worked 

only once or doesn’t 

work at all

• Black wire is not connected to 

Line/Hot. Swap black and red wires.

• Check wiring; ground wire must be 

connected for product to function.

• Wait 10 seconds.

Not all of my sensor 

modes are available 

while programming

• Sensor modes are limited in the 

Vacancy model (MS-A102-V).

Lights do not turn 

ON when space is 

occupied

• Off-While-Occupied mode is Enabled 

and the timeout has not expired.

• Sensor mode is set to Vacancy.

• You may have the Vacancy model 

(MS-A102-V).

• Sensor is set to one of the Ambient 

Light Detection (ALD) settings and 

the room is too bright for the current 

light level setting.

• Sensor does not have full view of 

the room. Move objects blocking 

line-of-sight.

For additional features, wiring help, troubleshooting, and product information 

please visit: 

www.lutron.com / DTMaestroInstall

4

Wait for 2 minutes

• The sensor switch will manually control the load after the first 10 seconds.

• Once power has been restored, the sensor switch will automatically control the load after the 

first 2 minutes.

Important Notes

Please read before installing.

 

1.

 Ground is required for product to function. If no ground 

wire is present, consult a licensed electrician.

 2.

 When power is applied, the sensor switch can be manually 

turned on or off after the first 10 seconds and will 

automatically control the load after 2 minutes.

 3.

 The sensor switch requires an unobstructed view of the 

room and line‑of‑sight to detect motion.

 4.

 Hot objects or moving air currents can affect the 

performance of the sensor switch and may cause the 

sensor to turn on unexpectedly or maintain its current 

state longer than desired. 

 5.

 

CAUTION:

 To reduce the risk of overheating and possible 

damage to other equipment,  

DO NOT

 use to control receptacles.

  6.

 Install in accordance with all national and local electrical 

codes.

 7.

 For indoor use only. Operate between 32 °F and 104 °F 

(0 °C and 40 °C).

  8.

 Clean with a soft damp cloth only. 

DO NOT

 use any 

chemical cleaners.

Lutron Electronics Co., Inc. 

7200 Suter Road 

Coopersburg, PA 18036‑1299

www.lutron.com

English

MS-A102-V

Vacancy

3

Turn Power ON

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CAUTION! Risk of Electric Shock.

 Leakage current present. Earth 

connection required before connecting power.

2

Connect sensor switch

• For additional wiring instructions, please visit www.lutron.com/DTMaestroInstall

• Before installing wallplate, program all desired settings. See back for programming 

instructions.

Single Pole Wiring

m

30

15

5

1

Occ

Lrn

Fixd

Vac

Mode

Hi

Med

Low

Off

Hi

Med

Low

Min

PIR

Neutral

Black

Red

Load

Green

Green/Yellow

Ground

Line/Hot

120–277 V

~

50 / 60  Hz

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