Extech Instruments 375475 User manual

User's Guide
7-Day Programmable Digital Timer
Model 375475
Introduction
Congratulations on your purchase of the Extech 375475 Digital Timer. This device
features individual or multi-day timer settings (up to 6 On/Off settings per day), easy-to-
read LCD, and battery-backup for the real-time clock. Careful use of this timer will
provide years of reliable service.

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AM
Mo
12:00 00
|ON
AM
WE
12:00 00
|ON
AM
TU
12:00 00
|ON
AM
US
12:00 00
|ON
AM
MoTWTFUEHR
12:00 00
|ON
AM
SSAU
12:00 00
|ON
AM
MoTWTFSSUEHRAU
12:00 00
|ON
Specifications
General Specifications
Input Line Voltage 120VAC (60Hz)
Switching Interval 1 minute minimum
Max Output Current 15A (resistive load); 8A (lighting load)
Max Resistive Load 1800W (15A x 120VAC)
Max Lighting Load 960W (8A x 120VAC)
Max Motor Load 1 Hp
Memory Backup One 1.5VDC Type N battery
Dimensions 4x2x2" (104x54x51mm)
Weight 5.25 oz. (150g)
Operation
Set the Real-Time Clock
1. Day Set: Hold down the CLOCK button and
press the WEEK button until the correct day
appears at the top of the display.
2. Time Set: Hold down the CLOCK button and press the HOUR button until the display
indicates the correct hour. You may have to cycle through the hours twice to obtain the
proper AM or PM (on the left side of the display).
3. Hold down the CLOCK button and press the MIN button until the display indicates the
correct minutes. Seconds will automatically reset to zero.
Set the Power ON/OFF Timers
1. Push the PROG button once. 1ON will appear near the lower left corner of the display to
indicate the the first power-on time is ready to be programmed.
2. Press the HOUR and
MIN buttons to enter
your first desired
power-on time.
3. Press the WEEK button to select
the desired day. These days appear
along the top of the display. If “Mo
Tu We Th Fr Sa Su” all appear on
the display, these days all have the
same power-on time. You can
select “Mo Tu We Th Fr” as a
group, “Sa Su” as a group, or a
single day.
AM
MoTWTFSSUEHRAU
_ _ _ _
|ON
AM
MoTWTFSSUEHRAU
12:0000
|ON
AM Mo
12:0000

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4. When you have your first desired power-on time and date entered, press the PROG
button. 1OFF now appears on the display to indicate that the first power-off time is ready
to be programmed. Repeat steps 2 and 3 to enter your first desired power-off time.
5. Press the PROG button again. 2ON appears on the display to indicate that the second
power-on time is ready to be programmed. Repeat the same procedure used in steps 2
through 4 to enter the rest of your power-on/power-off times (up to 6 on/off times
maximum).
6. Press the PROG button to step through the times you entered to make sure they are
correct.
7. Press the RST/RCL button to reset or recall any timer entries. When you reset a
particular power-on/off entry, four dashes will appear instead of time. When you recall
an entry, it will return the values that were set before you performed a reset.
8. Press the CLOCK button to return to the real time clock display.
9. Press the ON/AUTO/OFF button until the bar below the display is positioned above the
OFF legend on the face of the timer.
Connecting an Appliance to the Timer
1. Plug the Digital Timer into a standard AC outlet. If the power indicator light is on, press
ON/AUTO/OFF button once or twice until the light goes out. NOTE: The bar below the
display should be above the “OFF” legend.
2. Plug the appliance cord you wish to control into the socket on the Digital Timer. Make
sure any power switch on the appliance is set to on. (The appliance will not turn on
because the Digital Timer is set to off).
3. To manually turn the appliance on, press the ON/AUTO/OFF button until the power
indicator lights and the bar below the display is above the “ON” legend on the timer’s
faceplate.
4. To automatically control the appliance, press the ON/AUTO/OFF button until the bar
below the display is above the “AUTO” legend on the faceplate.
MoTWTFSS UEHRAU
_ _ _ _
|OFF
MoTWTFSS UEHRAU
|OFF
12:00 00
MoTWTFSS UEHRAU
_ _ _ _
2ON
MoTWTFSS UEHRAU
_ _ _ _
2OFF
AM
MTWTFSS OU EHRAU
________

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Support Hotline [phone]
Tech support: Ext. 200; Email: [email protected]
Repair/Returns: Ext. 210; Email: [e-mail]
Website: www.extech.com
Notes:
1. Be sure to observe battery polarity when you insert it into the timer.
2. Do not overload the timer. Be sure that the appliance that you wish to control does not
exceed the maximum loads shown under “Specifications”.
3. Always set the real-time clock before entering your on/off times.
Warranty
EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in
parts and workmanship for one year from date of shipment (a six month limited warranty
applies on sensors and cables). If it should become necessary to return the instrument for
service during or beyond the warranty period, contact the Customer Service Department at
[phone] ext. 210 for authorization or visit our website at www.extech.com for contact
information. A Return Authorization (RA) number must be issued before any product is
returned to Extech. The sender is responsible for shipping charges, freight, insurance and
proper packaging to prevent damage in transit. This warranty does not apply to defects
resulting from action of the user such as misuse, improper wiring, operation outside of
specification, improper maintenance or repair, or unauthorized modification. Extech
specifically disclaims any implied warranties or merchantability or fitness for a specific
purpose and will not be liable for any direct, indirect, incidental or consequential damages.
Extech's total liability is limited to repair or replacement of the product. The warranty set forth
above is inclusive and no other warranty, whether written or oral, is expressed or implied.
Copyright ©2004 Extech Instruments Corporation
All rights reserved including the right of reproduction in whole or in part in any form.