Heath Zenith MSS Folheto

The 3-Way Motion Sensing Switch (MSS) detects motion to turn on
lights for an adjustable amount of time. A built-in photo cell can be set
to keep lights off when the lights aren't needed. The unit has excellent
sensitivity and a wide 150

0

detection range. It can be used with incan-

descent lighting as well as rapid start fluorescent lighting. 

The  MSS  can  be  used  to  replace  either  a  3-way  wall  switch  or  a 
single pole switch. Some codes require installation by a qualified elec-
trician.

Features include:
• 150

0

motion detection angle

• Adjustable on-time from 5 sec. to 20 min.
• Adjustable photocell
• Works with incandescent and rapid start fluorescent lighting
• Works with motors up to 1/8 hp.
• Slide switch selectable OFF, ON AND AUTO modes.

WARNING: Turn power off at the circuit breaker before wiring.

Note: a "3-way" circuit controls lights from two sepa-
rate switches. If you want to use this product in a sin-
gle switch circuit or if you want to install more than one
motion sensing wall switch, see page 6
• Remove the decorative coverplate (secured by two

screws).

• Remove Control Cover. (Press in with screwdriver.  

Swing out cover to remove.)

• Choose which switch will be replaced and remove it.
• For easier re-wiring later, mark the house wiring with 

tape indicating where the wire had been connected.

• Connect the 3-Way Motion Sensing Switch as shown in the diagram below:

• Mount the MSS into the junction box with the two junction box screws.
• Turn the circuit breaker back on.
• Preset the controls: Time to min. (fully CCW), Photo Adjustment fully clockwise. Cover the lens with masking  

tape.

• With the motion sensor in the "ON" position, turn the remote switch on and off several times. Go to step 1, 2, 

or 3, depending on results.

WARNING: Shut off all power at fuse box or circuit breaker before beginning installation.

If you have a problem with your Wall Switch, first follow this guide. If the problem persists, call the 
customer service hotline at 1-800-435-4448 between 8:00 AM and 6:30 PM ET weekdays.

Electrical  input................................................................................................................................120V,  60  Hz

Fluorescent  Load...........................................................(2)  30  Watt  minimum  400  Watt  maximum  Rapid  Start

Motor  Load.............................................................................................................................1/8  HP maximum

Incandescent.........................................................................................................................500W  at  120V AC

On-Time..........................................................................................Adjustable  approximately  5  sec.  to  20  min.

Photocell  Sensor.......................................................................................From  dull  daylight  to  less  than  1  FC.

Coverage...............................................................................up to 15 ft. at 150

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, up to 30 ft. in front of the sensor

Replace control panel cover and install the decorative wall plate. In installations where the GE motion sensor
switch is combined with other switches or outlets on an expanded box, a combination wall plate will need to
be purchased. Various combination wall plates are available at Home Centers and Electrical Supply Stores.

Slide the switch a couple of times to make sure it operates freely.

When the light in the room is at the
level you want the lights to turn on,
set the switch to the AUTO position.
Put  the  TIME  control  to  the  5  sec-
ond position.
Put  the  LIGHT control  to  the  mini-
mum  dark  (fully  counter-clockwise)
position.
Wait for the lights to turn off.
Turn  the  LIGHT adjustment  clock-
wise in very small steps and wait 2
seconds  before  moving  your  hand
in  front  of  the  sensor.  Repeat  until
the  lights  controlled  by  the  sensor
come  on.  The  light  will  now  come
on when the light level is at or below
the  present  level  and  motion  is
detected.

To adjust the photocell:

MODE Selection Switch
Moving the switch selects one of three modes of operation: OFF, AUTO, ON

OFF: Lights stay off.

AUTO: Lights come on for time set when motion is detected and the light level is below the set level or when
3-way switch is manually switched. 

ON: Lights stay on continuously. Flipping 3-way switch has no effect.

•

•

•

•

•

•

The  sensor  can  be  prevented  from  turning  on  lights
when  there  is  already  enough  light  in  the  room.  Use  a
small phillips screw driver to set the light level using this 

diagram as a guide. In the fully clock-
wise  position,  the  sensor  turns  on
lights even in full daylight. In the fully
counter-clockwise  position,  the  sen-
sor only turns on lights when the sur-
rounding light level is very low.

- 2 -

- 6 -

- 3 -

- 4 -

- 5 -

- 7 -

- 8 -

5 Seconds

20 Minutes

Any Light Level

Dark (low light level)

SYMPTOM

Light does not come
on in the AUTO
mode.

Lights do not stay
on in the Auto mode.

POSSIBLE CAUSE

Circuit breaker or fuse is
turned off.
If the lamp being controlled
has another switch, it may
be turned off.
Bulb is defective.
LIGHT control is set too far
toward the DARK position.
MODE switch is set to OFF
instead of AUTO.
Poor connection.

Motion has stopped in the
room.
TIME control is set for too
short a delay.

1.

2.

3.
4.

5.

6.

1.

2.

SYMPTOM

Light does not turn
off.

Light comes on for
no reason in the Auto
mode.

POSSIBLE CAUSE

Incorrect wiring.
MODE switch is set to
ON instead of AUTO.
Motion is still present.
Delay set by TIME
control has not
expired.
Heating or cooling ob-
jects (such as air
vents, appliances, or
drafts through the wall
box) are causing false
triggering.
Switch on the sensor
has been turned off
and back on.
There was a momen-
tary power interrup-
tion. The light will turn
off automatically when
the "on" time expires.

1.
2.

3.
4.

1.

2.

3.

GENERAL APPLICATION INFORMATION

The detector is more sensitive to motion across the front of the sensor than to motion towards the sensor.

The detector senses heat in motion and possible heat sources that change temperature quickly. Therefore, to 
avoid false triggering, avoid placing the sensor where it will be aimed at air conditioners, heaters, and other
sources of heat or cold.

NEW APPLICATION

Choose  a  location  where  the  motion  sensor  has  a  clear  view  of
the entire area where occupant motion may occur.

RETROFIT APPLICATION

Motion sensing switch will replace existing wall switch. Use only
where  the  existing  switch  location  provides  a  clear  view  of  the
occupied area.

Included are: • The sensor switch • Cover plate • 4 wire connectors • 2 large screws • 2 small screws.

Typical Plan View of Coverage

30'

15'

0'

WARNING: For indoor use only.

Questions? Call 1-800-435-4448 8:00 AM to 6:30 PM Eastern Time, weekdays

Hot Wire

Common Switch Lug

Hot Wire

≠ Replace

switch with MSS

Hot Wire

Hot Wire

Jumpered Wire

Brown

Black

Red

¨

Add

Jumper

Wire

Green ground wire to

junction box screw or

grounding wire

1.

2.

3.

If light does

not turn on:

If light turns

on in only one

position of

remote switch:

If light turns

on with

remote switch

in either 

position:

Set sensor to "AUTO". Wait for the

unit to warm up (up to 1 min.). If the

remote switch can turn the lights on,

it's OK. Otherwise:

Test again.

Go to 2 or 3.

Test again.

Go to 1 or 3.

Exchange

Red & Black

wires on

MSS Control

Exchange

Red & Brown

wires on

MSS Control

Exchange Red & Brown wires 

on MSS Control. Remove the

tape. Go to the next page.

HOT

3-Way

Switch

3-Way Switch Wiring Diagram

3-Way

Switch

HOT

Existing Wiring Diagram

HOT

Red & Brown

Black

Black

Red & 

Brown

HOT

• For single switch installations, 

connect the wall switch as shown 
here.

If you want to have motion sensors at both 3-way switches, connect them as shown below. The minimum
wattage may increase to 100 W for fluorescent and 50 W for incandescent lighting.

Common Switch Lug

HOT

BLACK

Red & Brown

LOAD

Green ground wire to

junction box screw or

grounding wire

Green ground wire to

junction box screw or

grounding wire

Dual 3-Way Motion Sensor Wiring Diagram

• Remove remaining 3-way switch from the junction box.
• Add the jumper wire to the common lug and to either one of the two switched lugs. If you're not sure which 

lug is common, install the jumper on any two of the three wires, and test the jumper as explained on the next 

page.

The switch may

indicate the

common

Common

Switch Lug

Hot Wire

Jumper

To Brown wire

of MSS

(note Color)

OR

Color of screw

may be different

for the common

To Red wire

of MSS

(note color)

• Shut off power at fuse box or 

circuit breaker before installation

• Use indoors only
Risk of fire   

• Do not exceed electrical ratings

Res. #8143555

50336/50337.instructions    3/26/01    11:29  AM    Page  1

COMMON

598-1107-01

There  are  6  preset  selections  for  the 
amount  of  time  the  lights  stay  on: Test  (5 
seconds), 1, 5, 10, 15, and 20 minutes. Use 
a small, phillips screw driver to adjust the 
TIME control (see Figure 4). Turn the TIME 
control until it “snaps” into the desired time 
position.

Re-install the switch.

Turn the circuit

breaker back on.

Leaving the jumpered switch in one position,

flip the other 3-way switch on and off.

Lights

turn on
and off.

Lights

turn on
and off.

Jumper is

correct. Go

to next page.

Flip the switch with the

jumper wire to the

other position.

Flip the unjumpered switch

on and off.

Jumper is

correct. Go

to next page.

Move one end of the jumper

wire to the previously

unconnected terminal.

Remove the jumpered

switch from the

junction box.

Yes

Yes

No

No