User Guide

Features
This electronic timer provides automatic
shut-off for any load within the contact
ratings, such as whole house fans, bathroom
fans, air conditioners, lights and stereos/TVs.
Features include:
• Silent timing operation – ideal for homes,
libraries and other quiet areas
• Adjustable time limit from 1 second to
24 hours with simple “r
oll in” time entry
• Quick Set feature for 5, 10, 15, 30 min. and
1, 2, 4, 6, 8, 12 and 24 hours
• Digital readout continuously indicates
time remaining
• A selectable “WARN” feature, which
provides an audible and/or visual signal
that the load is about to switch off
• Alkaline battery (included) backup lasts up
to 1
1
/
2
years, even without utility power
• Low battery indicator
• “Lifetime” memory so that all settings are
maintained during battery replacement
• Heavy-duty “hard contact” switch that
controls up to 1 & 2 H.P. motors at 120
& 240 volts respectively
• Replaces any existing wall switch
controlling 120–277 VAC loads with no
adjustment. No neutral or ground
connection to the timer is required.
• “HOLD” feature for overriding the ON
time indefinitely
• True 3-way function allows timed interval to
be started, stopped and/or restarted from
one or more remote switches.
The EI40 can replace your regular switch or
3-way switch (where two switches control the
same load). The remote (3-way) switch (or
switches) can be mounted up to 200 feet
away. The EI40 can control an outlet to
switch loads up to the contact ratings, and
can control incandescent lights, fluorescent
lights, HID (high intensity dischar
ge) lighting
and floodlights. It can also control many
types of loads (12 to 277 volts AC and 12 to
28 volts DC). The timer may not be used with
lighted switches in thr
ee way applications. A
decorator style switch plate is required for
installation (not supplied).
Installation
1. TURN OFF POWER by REMOVING FUSE or
turning the CIRCUIT BREAKER OFF.
2. Remove the existing wall switch and
prepare the ends of the house wiring.
3. Single Switch – (See below) Connect one
of the house wires to the black wire from
the timer, using the wire nuts provided.
Connect the other house wire to the blue
wire from the timer. THE RED WIRE IS
NOT USED FOR SINGLE SWITCH
INSTALLATIONS. Cap the red wire with a
wire nut. Make sure that all wire nuts are
secure.
3-way Switch – (See below) (See “Other
Installations” to use a dimmer or if
switching from 3 or more locations). A
3-way switch has three wires connected to
it. One of the wires is “common” (the
terminal has a different colored screw or
there are markings on the old switch).
Connect the black wire from the EI40 to
the common wire. Connect the other two
wires to the blue and red wires from the
EI40 (it doesn’
t matter which goes to
which). Identify the “common” at the
other (r
emote 3-way) switch. Connect the
supplied jumper wire from the common
ter
minal to one of the other two terminals
of the switch. If the load does not turn on
when you get to step 7, tur
n power off at
the fuse or circuit breaker and switch the
jumper wir
e to the other non-common
terminal.
4. Tuck the wires into the wall box, leaving
room for the timer.
5. Using the screws provided, mount the
timer to the box and install the wall plate.
6. Your timer is ready for use. Return power
to the circuit at the service panel.
7. Press on the clear cover. The display
should change from OFF to a time interval,
then the time should begin counting
down. The load should turn on. Press the
clear cover again. The word OFF should
flash for 1 second, the load should turn
off, and the word OFF should show
steadily. On installations with remote
switches, test their function by using them
to turn the load on and off. As with the
timer, there is a brief delay before the load
turns off. Allow at least 2 seconds for the
timer to respond to the remote switch.
EI40C/EI40AC
Electronic Automatic Shut-Off Timer
Single Switch Installation
3-Way Switch Installation
BLACK WIRE
BLUE WIRE
RED WIRE
(CAPPED, NOT CONNECTED)
BLACK WIRE
BLUE WIRE
RED WIRE
(CAPPED, NOT CONNECTED)
RED WIRE
BLUE WIRE
BLACK WIRE
WIRE FROM 
"COMMON" OF 
OLD SWITCH
COMMON
MOVE 
JUMPER 
WIRE TO 
OTHER 
TERMINAL 
IF THIS 
SWITCH 
DOES NOT 
TURN 
LIGHT ON
REMOTE 
3-WAY 
SWITCH
7/16"
TRIM HOUSE WIRES BARE TO 7/16"