Intermatic ST01K, ST01 Installation guide

Intermatic ST01K, ST01 Installation guide
Spring Grove, Illinois 60081
In-Wall Timer with Astro Feature
Installation and User Guide
The ST01 Series and EI600 Series In-Wall Timers
give you versatility in a simple to install, 24/7
programmable package. These timers allow you to
customize your timer schedule with automatic dusk/
dawn, random, and Daylight Saving Time (DST)
programming options for up to 40 ON/OFF events.
The ST01 Series and EI600 Series are incandescent/
fluorescent/CFL/LED compatible. In addition, these
timers can handle any load type and require no
neutral wire connection, making them ideal for any
application, regardless of complexity.
120-277 VAC, 50/60 Hz
15 A, 120-277 VAC
15 A, 120 VAC; 6 A, 208-277 VAC
8 A, 120 VAC;
4 A, 208-277 VAC
1 HP, 120 VAC; 2 HP, 240 VAC
20 A, 120-277 VAC
16 A, 120-277 VAC
DC Loads
4 A, 12 VDC; 2 A, 28 VDC
32° F to 104° F (0° C to 40° C)
4 1⁄8” H x 1 3⁄4” W x 1 13⁄16” D
Risk of Fire or Electric Shock
• Disconnect power at the circuit breaker(s) or disconnect
switch(es) before installing or servicing (including replacing the
• Installation and/or wiring must be in accordance with national
and local electrical code requirements.
• Use COPPER conductors ONLY.
• Do Not recharge, disassemble, heat above 212° F (100° C),
crush, or incinerate the Lithium battery. Keep out of reach of
• Replace battery with Type CR2 only that is certified by
Underwriters Laboratories (UL).
• Do NOT use timer to control devices that could have dangerous
consequences due to inaccurate timing, such as: sun lamps,
saunas, heaters, slow cookers, etc.
• Risk of timer damage due to leakage if weak battery is not
replaced promptly.
• Dispose of product per local regulations for disposal of Lithium
– button (Decrease)
Mode button
+ button (Increase)
Reset button
On/Off button
Access door to
battery tray
Read these notes before continuing with the timer
installation and programming process.
• The timer is battery-powered and does not need
AC power for initial setup and programming. For
new installations, it is recommended that you setup
and program your timer before installing it.
• The battery controls the ON/OFF function (“clicking” sound) and maintains the time and date. The
screen flashes BATT when the battery strength is
low. When replacing the battery, disconnect AC
power. You will have a few minutes to insert new
batteries before the date and time settings are lost.
All other settings will remain in memory, without
battery or AC power.
• Each ON or OFF setting is an event. Each event
must be programmed separately.
• The MODE menu includes SETUP, PGM (program),
AUTO (automatic), RAND (random), and MAN
(manual). AUTO and RAND modes do not appear
on the menu options until the time of day is set and
at least one ON or OFF event is programmed.
• All menus loop (repeat options when you get to the
end of the menu). When in a specific Mode, press
ON/OFF to loop within that Mode.
• When using the + or – buttons to change a flashing
setting, hold the button to make the numbers scroll
• When advancing to the next setting, the timer automatically saves the data from the previous screen
whether you changed a setting or not. All settings
save automatically after five minutes.
Follow these steps for initial setup and programming
of the ST01 Series and EI600 Series timers.
Before mounting the timer in the wall, install the
supplied battery.
1. Gently pry open the access door, located below
ON/OFF, and remove the battery tray from the
Clear All Existing Settings
2. Place the supplied CR2 battery into the battery
tray, matching the battery + and – markings to
the + and – markings on the tray, then place the
battery tray back in the timer.
2. Using a paper clip or pen, press and release
the RESET button. The timer displays INIT after
approximately five seconds.
3. The display initializes, then flashes 12:00 am in
manual mode.
4. Press ON/OFF. The timer “clicks” to confirm it is
ready for programming.
Note: If the display doesn’t flash 12:00 am, check/replace
the battery before proceeding.
When first setting the timer, it is recommended that
any existing settings be cleared.
1. Press and hold ON/OFF button.
3. Release the ON/OFF button. All previous settings
are removed.
Initial Setup
1. Press MODE until SETUP
appears on the display.
2. Press ON/OFF to advance to
the next menu item (HOUR).
3. Press + or - to adjust the
flashing menu item (HOUR).
4. Press ON/OFF to advance to
the next menu item (MINUTES).
5. Repeat steps 3 & 4 to set the
and DATE.
Note: After setting the DATE, the current day of the week
flashes. Verify the DAY. If wrong, press + or - to review
and adjust the YEAR, MONTH, and DAY. Press ON/
OFF to confirm.
6. The DST selections (AUTO
or MAN) flash on the display.
• Press + to change the
–– Select AUTO if your
location observes DST.
–– Select MAN to disable
automatic DST
• Press ON/OFF to confirm and advance to
ZONE selection.
8. The hours digit of the
current day’s DAWN time
flashes on the display.
• Press + or - to adjust the
hour, as necessary.
• Press ON/OFF to confirm
and advance to the DAWN
minutes digit.
• Press + or - to adjust the minutes, as
• Press ON/OFF to confirm and advance to the
DUSK hours digit.
• Use the same process for setting the DAWN
time to set the time for DUSK.
Note: Locate the current day’s dusk and dawn times in a
local paper or online. You may deliberately adjust
DUSK and/or DAWN settings up to +/- 120 minutes,
if desired, to cause Astronomic events to always
occur a predictable amount of time before or after the
actual dusk or dawn.
9. The timer loops to the beginning of the SETUP
• Press ON/OFF repeatedly to review/revise your
settings, or press MODE to exit SETUP.
Programming Events
Note: Program ON and OFF events as separate events.
Note: The remaining settings for initial setup (ZONE, DAWN,
and DUSK settings) are only used for regulating
Astronomic events. There is no need to adjust these
settings if you are not scheduling an Astronomic
1. Press MODE until PGM
appears on the display.
7. The ZONE selections* (CENT, SOU, or NRTH)
flash on the display.
• Press + to change the
selection to match
your location on the
• Press ON/OFF to
confirm and advance
to DAWN/DUSK selection.
Note: If this is the first event,
you will see 01.
Note: Astronomic adjustment on this product is designed
for the continental United States. Astronomic
schedules are not recommended for locations
substantially beyond the continental US borders,
including Alaska. For southern Canada, select “NRTH”
zone. For northern Mexico, select “SOU” zone. Please
visit for other timer models
offering expanded Astronomic geographic coverage.
2. Press ON/OFF to confirm. An
event number flashes on the
3. Press ON/OFF to confirm the
event number. An event type
flashes on the display.
4. Use + to select the event type.
• ON - sets an ON event
• SKIP - stops the event
• OFF - sets an OFF event
5. Press ON/OFF to confirm. An
event time type flashes on the display.
6. Use + to select a time type.
• Fixed Time
Note: To set a Fixed Time, press ON/OFF, then + or - to
adjust the hour. Press ON/OFF. Use the same
process to set minutes. Press ON/OFF to confirm.
7. Press ON/OFF to confirm. A day selection flashes
on the display.
8. Use + to select the days
the event runs.
• ALL - all seven days of the
• M-F - Monday through Friday
• WKD - Saturday and Sunday
• Individual day - select: SUN, MON, TUE, WED,
Finalizing Installation
1. Disconnect the power at the service panel.
1. Make sure the provided twist-on wire connectors
are secure, then tuck the wires into the timer wall
box, leaving room for the timer.
Observed Problem Possible Cause
What To Do
Observed Problem Possible Cause
Timer display is
Battery is missing,
blank and the timer has no charge, or was
does not “click”
installed incorrectly.
when the ON/OFF
button is pushed.
Attempt to
reinsert the
battery. If the
problem persists,
insert a fresh
Timer does not
switch ON/OFF
but display looks
Timer is not set in
Press MODE
to select the
mode you want
to use.
Timer resets to
Timer is installed in
conjunction with a
contactor or motor
Install a line
The timer ignores a • The remote switch Contact a
three-way remote
or timer is wired
switch even though wrong.
it is wired correctly • There is an
or the load turns
excessive length of
off immediately
wire (greater than
after being turned
100 feet).
• There is buried
wire to the remote
• The remote switch
is not functioning
properly or worn out.
Timer won’t enter
Auto or Random
mode when you
press Mode.
No schedule is
Define a
schedule of
Timer switches
at incorrect times
or skips some of
the programmed
The active schedule
has a conflicting
Review the
settings and
revise them as
2. Remove wall switches, if applicable.
3. Strip the existing wire ends
to 7/16".
2. Using the provided screws, secure the timer to
the wall box.
9. Press ON/OFF to confirm. The display reads
SAVE, then flashes the event number to indicate
the event is saved.
4. Wire the timer into the wall box.
An example of single-pole and three-way wiring
follow. For other three-way wiring scenarios, go
Note: To continue programming events, use + to advance to
the next event number, then repeat steps 3 through 9.
Single-Pole Wiring
Wire A
Selecting Operating Modes
Wire D
Timer operates per your programmed
schedule of ON/OFF events.
120 V
Timer operates your schedule at +/- 15
minutes from the programmed time.
Operates like a manual ON/OFF switch,
disregards any programmed events.
Note: To set the timer to recognize your programmed
events, press MODE to scroll to AUTO or RAND only.
Reviewing/Changing Clock Time,
Calendar, or Astronomic Settings
Repeat the steps under “Initial Setup” to review and
make setting changes, as needed.
Changing Events
1. Press MODE until PGM
appears on the display.
Wire C
Make sure the timer displays MAN MODE during
The wiring shown is for a timer replacing a three-way
switch at the line side. For other installations, visit or consult a qualified electrician.
Wire A
Wire D
120 V
4. Press ON/OFF to cycle through the program until
the display reads SAVE.
Wire C
To test the timer, press ON/OFF several times. The
timer should “click” and the controlled light or device
(load) should turn ON or OFF.
Three-Way Wiring Test
1. To test the timer, test with the remote switch in
each of its two positions.
3. If the timer clicks, but the load does not operate:
a. Disconnect the power at the service panel.
b. Re-check your wiring and make sure the load
is functional.
c. Reconnect the power at the service panel.
Wire B
Single-Pole Wiring Test
2. Press ON/OFF several times. The timer should
“click” and the controlled light or device (load)
should turn ON or OFF.
Note: The distance between the timer and the remote
switch must not exceed 100 feet.
3. Press ON/OFF to confirm.
• To change the ON/OFF
status of an event, use
+ to select the event type.
–– ON - sets a previously
OFF event to ON
–– SKIP - suppresses the selected event so it
is not initiated by the timer. This is helpful for
unusual programming needs, like vacation
–– OFF - sets a previously ON event to OFF
• To update an existing setting, press ON/OFF
until the setting to be updated displays.
–– Press + to adjust the setting.
5. Press MODE to exit the programming menu.
Wire B
Black — Connects to the hot (black) wire from the
Power Source
Blue — Connects to the other wire (black) from the
Red — This wire is not used in single-switch
installations. Cap with a twist connector
Green — Connects to the supplied ground
4. For three-way wiring, install the remote switch in
wall box. Cover the switch with the wall plate and
5. Reconnect the power at the service panel.
Three-Way Wiring
2. Press ON/OFF to confirm.
An event number flashes.
Use + to find the correct
event number.
3. Cover the timer with the wall plate and secure
using the provided screws.
Wire E
d. Retest.
Black — Connect to the wire removed from the
“COMMON” terminal of the switch being
Blue — Connect to one of the other wires removed
from the switch being replaced. Record the
wire color connected to the blue wire for use
during load-side installation
Red — Connect to the remaining wire removed from
the switch being replaced. Record the wire
color connected to the red wire for use during
load-side installation
Green — Connect to the supplied ground
Jumper Wire — At the other three-way switch, install
the supplied jumper wire between
wire B and the common terminal
4. If the timer clicks, but the load only operates
when the remote switch is in one of its two
positions, repeat Step 3, a-d, but interchange the
two traveler wires (wires between the timer and
the remote three-way switch) connected to the
red and blue timer wires.
Note: Consult a qualified electrician if the switch and timer
fail to operate as intended.
5. When the timer “clicks” and the controlled
device turns ON and OFF as appropriate,
congratulations, the timer is successfully installed!
Enjoy your new timer!
Timer is in Random
Select the Auto
mode, which varies
switching times up to
+/- 15 minutes.
The Astronomic and
Defined switching
times are in conflict,
your DST may or may
not be turned on, and/
or your Astronomic
Zone is not set to
Center, North, or
Note: Your timer
automatically skips
any conflicting ON
event as summer
approaches to prevent
unwanted operation
of lights or other
controlled devices.
Review your
program settings
and revise them
as necessary.
Switching inductive
loads, such as
electrical contactor or
motor load.
Add a noise
filter e.g., ET-NF.
Connect filter
across load’s
Load only operates The remote switch is
when the remote wired incorrectly.
(three-way) switch
is in one position or
the timer ignores
the remote switch.
What To Do
The battery tray is Battery is not seated
difficult to replace. in the tray.
• The tray is
• The contact tabs of
the tray are bent
Seat the battery
in the tray, then
The timer operation
is sluggish or not
ON/OFF at all.
Though the “BATT”
message is not being
displayed, the battery
is getting weak.
Replace the
battery. To test
the battery,
press the ON/
OFF button. The
timer should
Timer shows ON
but the light or
other controlled
device is OFF.
The light or controlled Make sure
device itself may be the light or
switched OFF.
controlled device
is switched ON
and plugged in.
Note: When installing a timer with either a contactor or
motor load, a line filter is recommended.
For detailed warranty information, refer to the
Intermatic website at, contact
Intermatic by mail at Intermatic Incorporated
Customer Service / 7777 Winn Rd., Spring Grove,
Illinois 60081–9698, or by phone at: 815-675-7000.
Recheck the
especially for the
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