DT121C DIGITAL TIMER INSTRUCTIONS
Thank you for purchasing the DT121C Digital Timer.
Features:
• Easy set up
• 2 on /2 off settings
• Minimum setting interval is 1 minute
• Can be used for incandescent lights up to 300 Watts
• Manual Override
Set Up:
Batteries Activation-The timer is shipped with 2 batteries (L1154/SR44/LR44) installed.
Pull the protective strip from the battery carrier (See Fig 1). The display will flash 12:00AM.
(Note: To conserve battery power, if the timer is not plugged in and no button is pushed,
the display will go blank. To restore, press any button).
Clock (See Fig 2):
1)Press SET button once. The display will advance to TIME mode and the time will be
flashing.
2)Press + or – button until time of day is displayed. Holding either button down will
increase the speed of the setting.
On/Off Time:
1)After the time is set, press SET button once. The display will now show EVENT 1 ON
mode. EVENT 1 ON will be flashing with a blank display. (See Fig. 3)
2)Press + or – to advance to the ON time.
3)Once the ON time is set, press SET button once. The display will now show EVENT 1
OFF. (See Fig 4)
4)Press + or – to advance to the OFF time.
5)Repeat Steps 1-4 for the 2nd ON/OFF settings.
6)When timer events are completed, press SET once. This will put the timer in RUN
mode. The display will show the time of day entered, with the colon flashing.
Note: To clear an event time, push + and – buttons at the same time while in the ON or
OFF mode that you want to clear
Lamp Connection:
1)Turn lamp switch to ON position.
2)Plug lamp into the receptacle on the side of the timer.
3)Plug the timer into the wall outlet.
:
:
BATTERY
HOLDER
DOOR
PULL
TAB
FIG. 1
FIG. 2
FIG. 3
FIG. 4
DT121C DIGITAL TIMER INSTRUCTIONS
Manual Override:
To override the ON or OFF settings, press ON/OFF button. The override setting will
change at the next timed event.
Battery Replacement (See Fig 5 and 6):
When the batteries are running out, LO will be displayed.
1) Remove the timer from the wall socket.
2) Using a small flat screwdriver, pry the battery holder open. The DT121C uses 2
model L1154, SR44 or LR44 batteries.
3) Remove the old batteries (you have one minute to replace the batteries once the old
batteries are removed without losing the existing programs) and replace the new
batteries with the + facing the terminals.
4) When the batteries are in place, press the battery holder back into its original position.
5) Plug the timer into the wall socket.
Reset (See Fig 7):
To quickly delete the time and event settings, at one time, using the point of a pencil,
press the RESET button found above the battery holder on the rear of the timer.
Ratings:
8.3 Amp Resistive, and Inductive
300 Watt Tungsten, 120VAC, 60Hz
WARNINGS:
1) DO NOT USE THE TIMER TO TURN OFF POWER FOR MAINTENANCE (repairs,
removing broken bulbs, etc.). ALWAYS TURN POWER OFF AT THE SERVICE PANEL
BY REMOVING A FUSE OR CIRCUIT BREAKER BEFORE DOING ANY CIRCUIT REPAIRS.
LIMITED ONE YEAR WARRANTY
If within one (1) year from the date of purchase, this product fails due to a defect in material or workmanship, Intermatic
Incorporated will repair or replace it, at its sole option, free of charge. This warranty is extended to the original household pur-
chaser only and is not transferable. This warranty does not apply to: (a) damage to units caused by accident, dropping or abuse
in handling, acts of God or any negligent use; (b) units which have been subject to unauthorized repair, opened, taken apart or oth-
erwise modified; (c) units not used in accordance with instructions; (d) damages exceeding the cost of the product; (e) sealed
lamps and/or lamp bulbs, LED’s an batteries; (f) the finish on any portion of the product, such as surface and/or weathering, as
this is considered normal wear and tear; (g) transit damage, initial installation costs, removal costs, or reinstallation costs.
INTERMATIC INCORPORATED WILL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. SOME STATES DO NOT
ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR
EXCLUSION MAY NOT APPLY TO YOU. THIS WARRANTY IS IN LIEU OF ALL OTHER EXPRESS OR IMPLIED WARRANTIES. ALL
IMPLIED WARRANTIES, INCLUDING THE WARRANTY OF MERCHANTABILITY AND THE WARRANTY OF FITNESS FOR A PAR-
TICULAR PURPOSE, ARE HEREBY MODIFIED TO EXIST ONLY AS CONTAINED IN THIS LIMITED WARRANTY, AND SHALL BE OF
THE SAME DURATION AS THE WARRANTY PERIOD STATED ABOVE. SOME STATES DO NOT ALLOW LIMITATIONS ON THE
DURATION OF AN IMPLIED WARRANTY, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state. Warranty service
is available by mailing postage prepaid to: Intermatic Incorporated/After Sales Service/7777 Winn Rd., Spring Grove, IL 60081-
9698/815-675-7000 http://www.intermatic.com Please be sure to wrap the product securely to avoid shipping damage.
INTERMATIC INCORPORATED
SPRING GROVE, ILLINOIS 60081-9698
158DT11388
RESET
BUTTON
FIG. 5
FIG. 6
FIG. 7
