Indoor 24 Hour Digital Timer

MODEL NO. 52-8867-6

Noma logo

Noma Digital Timer

Know your product

Noma Digital Timer Front
LCD Display, ON OFF, SET, UP Reset Down
Noma Digital Timer Back
120 V AC 5A



Thank you for buying this Programmable Timer! By setting programs, you can tum on and off any plugged-in electrical appliances at your own selected time.

Operation of this Timer is simple. For optimal use, please read and follow the instructions carefully.


  • Real-time clock with Weekday, Hour, Minute and Second reading
  • Display in selectable 12 or 24 hour display format
  • 6 on/off program pairs with Weekday, Hour and Minute setting
  • Settings can operate individually either on a specific day, Monday to Friday, Monday to Saturday or every day
  • Daylight Savings Time
  • Manual on/off
  • Master/individual disable for pre-set program(s)


LCD Display

LCD Display
Hour, Minute, Second Program number, Set Mode, Clock Mode, Program Mode, On Indicator, Off Indicator, Summertime Indicator, Day, Disable Indicator

Battery Installation

The 1.5 V batteries have already been installed in the Timer. To activate, completely remove the piece of ribbon that is protruding from the battery compartment.

Note: The batteries serve to back up the clock and programs while the Timer is unplugged. The battery life is around 1 year when the Timer is not connected to the power outlet. If you plan to leave the Timer unplugged for a long period of time, you may want to remove the batteries from the Timer.


Reset Function / Abnormal Display

When an abnormal or blank display appears, or if you want to clear all programs, use a round object such as a ball-point pen to push the RESET key. After reset, clock and all programs will be cleared.

If the display is dim or abnormal, you should replace the button cell batteries.


The various program modes of the Timer are arranged in a continuous pattern as shown below:

Clock → Pgm.1 On → Pgm.1 Off → Pgm.2 On → Pgm.2 Off → Pgm.6 On → Pgm.6 Off → Clock…

The PROG symbol will light up to denote Program is being displayed.

Press either the Down or Up & key to scroll through clock and programs. If the key is pressed for more than 1 second, the key will repeat itself.

To return to the Clock display from other modes, simply press both Up and Down keys together.


Setting the Clock

  • To set the clock, press the SET key while the clock is displayed. SET will appear on the display and the day of the week will be flashing.

Setting the clock

  • Press Down or Up key to select the correct day. Hold the key and it will skip through the days.
  • Once the correct day has been selected press SET key and Hour will be flashing.
  • Press Down or Up key to select the hour
  • Press SET key and Minutes will be flashing.
  • Press Down or Up key to select the minutes
  • Press SET key and Seconds will be flashing
  • For the setting of Seconds, either Down or Up key will set the second to 00.
  • Press SET to exit the clock setting function. The SET display will disappear and the Timer will return to the normal clock display.

To change between 12 or 24 hour display, press the ON/OFF & SET keys together briefly to toggle between 12 hour and 24 hour display.


Pressing ON/OFF alone will disable all programs by placing an X on the screen. Pressing ON/OFF again will make the disappear and enable all programs again. This process is covered in depth on Page 9.


Setting the Program

With this Timer you can set up to 6 On/Off Programs. To set each program, please see the example shown below:

Example of setting program 1:

MO 8:15 ON / MO 15:45 OFF

In this example, the Timer will be turned on Monday at 8:15 and off at 15:45.

  • Press Down or  Up key until PROG 1 ON appears on the Display.
  • Press SET key and SET will appear on the display and Weekday will be flashing at the top of the screen.
  • Press Up key to select the day(s) for Program 1 to be active. The day displayed will sequence through MO-SU (everyday), MO to SU (individually), MO to FR, then MO-SA, SA-SU and repeat again.

In this example, the day would be Monday.

  • Press the SET key when MO appears on the display.
  • Hour should be flashing. Use Down or  Up key to change The hour to 8, then press the SET key.
  • Minute should be flashing. Change it to 15. Press SET key to finish the setting of Program 1-On.
  • Press Up key and PROG 1 OFF appears at the display. Use the same method to set the off time.

To set more programs, press the Up key and PROG 2 ON appears. Repeat the above procedures to set all Programs. If no key is pressed for 1 minute, the Timer will return to Clock display automatically.

Setting the Program   Setting the Program


Summer/ Winter Time

Pressing and holding both Down and Up keys at the same time in the Clock mode display will change the current time to Summertime mode. The hour will advance by one and the symbol Summer will light up to denote that the Summertime is activated. Pressing and holding the 2 keys again in Clock mode will return to normal time.

Manual On/ Off

The timer can be turned on or off at anytime by using the ON/OFF key without affecting the programs. The flashing ON or OFF will indicate that the Manual On/Off function is activated.


Activating the Disable / Master Disable Function

This function allows you to disable any or all of the preset On/Off programs. To disable one particular program, display the program you wish to disable, then press the SET key. The display will be flashing and the word SET will light up.

Press the ON/OFF key to disable the program and the X symbol will appear to indicate that particular program is disabled.

Master Disable Function

Note: If the display is still flashing and there are no changes to be made on the preset program time, press the SET key until the display is not flashing. Use this function to disable as many available preset programs as you choose.

To disable all 6 programs, press the SET key while in Clock display, then press the ON/OFF key. The X symbol will appear on the Clock Display Mode and indicate that all preset programs are disabled.

To cancel this Disable function, just use the same method as above to turn off the X symbol.



This timer is equipped with a 2-pin polarized receptacle. An appliance with a 2-pin power cord is suitable to connect with it. Before plugging the timer in, it is recommended to view the correct polarization of pin. Do not force the plug or power cord into the receptacle. Do not remove the ground pin of a 3-pin plug to plug into the timer receptacle.

Technical Specifications

Program: 6 programs per day or per week

Minimum switching time: 1 minute

Ratings: 120V AC 5A

Maximum load: 600 W


This Noma® product carries a 1 (one) year warranty against defects in workmanship and materials. Trileaf Distribution agrees to replace the defective product free of charge within the stated warranty period, when returned by the original purchaser with proof of purchase. This product is not guaranteed against wear or breakage due to misuse and/or abuse.

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Noma Digital Timer Instructions – Optimized PDF
Noma Digital Timer Instructions – Original PDF

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