Intermatic EJ351 Installation And User Instructions Download Page 1

Connect two wires from the wall 

5. 

to the BLACK wires from the 

switch timer, using the twist 

connectors provided. 
If the old switch had a ground 

6. 

wire (normally connected to a 

green hex-head screw), fasten it 

securely to the metal box or timer metal bracket.
Make sure all twist connectors are tight.

7. 

Tuck wires into wall box leaving room for the device.

8. 

Using 2 flat-head screws provided, mount the switch timer 

9. 

into the wall box.
Position the wall plate over the switch timer, 

10. 

making sure the upper screw hole of the wall 

plate is over the RED indicator light.
Install the control panel over the wall plate as 

11. 

follows:

Position the clear plastic lens into the up-

a. 

per screw hole in the wall plate.
Make sure the post next to the knob shaft 

b. 

is properly aligned with the control lever 

hole in the control panel.
Install the dome-head screw in the bottom 

c. 

hole of the control panel, on through the 

bottom hole of the switch plate. Tighten 

snugly but DO NOT OVERTIGHTEN.
Install the white plug over the dome-head 

d. 

screw.

Press the dial onto the switch timer’s shaft. 

12. 

Align the flat side of the shaft with the flat side 

within the dial.
Turn power back on at the service panel.

13. 

Indoor Wall Switch Timer

The EJ351 Switch Timer replaces a standard toggle switch. 

Installation requires the following tools:

Flat-blade screwdriver

• 

Phillips-head screwdriver

• 

Turn off power at the service panel by REMOVING FUSE or 

1. 

TURNING THE CIRCUIT BREAKER OFF.
Remove the switchplate and existing wall switch.

2. 

Remove the dial and control panel from the switch timer. 

3. 

Gently and firmly pull straight out to remove.
Trim building wires to 7/16” as shown.

4. 

500W maximum, 40W minimum (incandescent)

• 

NOTE: 

Derate to 400W maximum when 2 or more timers are 

installed in the same wall box.

120 VAC, 60 Hz

• 

30 minute minimum ON/OFF period

• 

24-hour repeat cycle

• 

Up to 48 daily operation events (24 ON, 24 OFF)

• 

Random Variability: For “lived in” look, ON/OFF times vary at 

• 

least 7 minutes from the set time  and at least 15 minutes from 

the previous day.
Power Failure Memory Protection: Depending on conditions at 

• 

time of power failure, will retain settings up to 15 minutes.
Operate at Room Temperature: 32°F (0°C) to 104°F (40°C)

• 

MODEL EJ351

Installing the Switch Timer

Specifications

BLACK

BLACK

RED

Indicator

Light

7/16”

Electrical shock hazard. Risk of injury or death. Remove electrical power at 

• 

service panel before installing.
Risk of fire. Do not use timer to control devices that could have dangerous 

• 

consequences due to inaccurate timing such as sun lamps, sauna, heaters, 
crock pots, etc.

          

          WARNING

Follow local electrical codes during installation.

• 

Do not use with PAR or “R”-type outdoor flood lamps larger than 150 watts.

• 

Use ONLY with incandescent lights. Do not use with compact fluorescent 

• 

lamps (CFLs), starter or other electronic ballasts, mercury vapor lights, ap-
pliances, radios TVs, stereos, etc.
Do not use in combination with separate dimmers or photoelectric switches. 

• 

In rare cases, may cause radio or TV interference which can be resolved by 

• 

adjusting the antenna, moving the receiver, or plugging the receiver into a 
different AC outlet. 

NOTICE

Use this procedure to manually program ON/OFF settings.

 1.

 Move the control lever to the OFF-CLEAR position for about 

20 seconds.

 The red indicator light will go off and any 

previous time settings will be cleared from memory.

2.

  Move the control lever to the ON position.

 The Red indicator 

light will start flashing.

    

NOTE: 

Should the Red indicator light remain ON, 

    

move the control lever to the OFF - CLEAR position 

    

for 20 minutes.

 3.

 Rotate the time dial clockwise at least one click, stopping at 

the present time.

NOTE:

 During programming, be careful not to press the 

dial while turning it. If you press the dial, you will 

accidentally set a wrong time.

 4.

 Press the dial once to set the present time.

 The Red indicator 

light will go off.

 5.

 Rotate the time dial clockwise to the first desired ON time.

 

The Red light will pulse momentarily with each click.

 6.

 Press the dial once to enter the ON time.

 The light controlled 

by the switch timer will turn ON.

 7.

 Rotate the time dial clockwise to the desired OFF time.

 

 8.

 Press the dial once to enter the OFF time.

 The light controlled 

by the switch timer will turn OFF.

 9.

 Repeat Steps 5-8 for each additional ON/OFF setting.

10.  

Continue to rotate the time dial until the Red indicator 

     light comes on and stays ON,

 indicating that the switch timer 

     is in AUTOMATIC mode.

Programming Using the RAPID Method

Red

Indicator

Light

Control

Lever

Push-Button

Time Dial

Control

Panel

Plastic

Screw 

Cover

INCLUDED FOR INSTALLATION:

Flat

Head

Screws

(2)

Dome

Head

Screw 

(1)

Twist 

Connectors

 (2)

Plastic

Screw

Cover 

(1)

RED Indicator Light

Clear 

Plastic 

Lens

Align with 

Hole in

Control Panel

Installation and User Instructions

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