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Features

• 

Dual function

• 

Counts up & down

• 

Big digit

• 

Clock

• 

Direct entry

• 

Loud and long alarm

• 

Stop and restart

• 

Last count recall

• 

Counts up after zero

• 

Counts last min in seconds

• 

Brushed stainless steel finish

• 

International time

• 

2-way mounting: magnet/stand

• 

Battery and instructions included

Note:

 Remove sticker from display before use.

Note:

 In the following instructions, names of the control 

buttons are shown in CAPS. Function information that appears 

on the display is shown in 

BOLD CAPS

.

Battery Installation

Replace battery when LCD becomes dim or alarm 

level declines.

1. Remove battery door in back by sliding down in 

direction of arrow.

2. Install 1.5V AAA battery observing polarity 

shown in compartment. The display shows all 

segments and a “beep” sounds.

3. Replace battery door.

Operating Instructions

A. Set Clock

1. Press, and hold the CLOCK button until 

24 Hr

 flashes. Press the START/STOP button 

to switch between 12 Hr and 24 Hr.

2. To set 12 Hr, AM/PM time, press the CLOCK 

button while 

12 Hr

 is flashing. 

AM 

will appear 

and will flash. To switch between AM and PM, 

press START/STOP.

3. To set AM time, press CLOCK while 

AM 

is 

flashing. Press CLOCK again, and the 

first 

digit

 will flash. To enter time, for example, 

09:45:00, enter 0 9 4 5 0 0.

4. To set PM time, press CLOCK while 

PM 

is 

flashing. Press CLOCK again, and the first digit 

will flash. To enter time, for example, 11:30:00, 

enter 1 1 3 0 0 0.

5. To set 24 Hr time, press CLOCK while 

24 Hr

 is 

flashing. Press CLOCK again and enter the time 

directly. For example, to set 23:30:00, enter 

2 3 3 0 0 0.

6. The clock will start automatically.
7.  The Timer and/or Count Up function will 

operate even though the display in the CLOCK 

mode. To alert the user in this case, 

TIMER 

and/or 

COUNT UP

 will flash on the display 

as a reminder.

B. Count Down

1. Press the TIMER button.
2. 

TIMER 

will appear on the display.

3. Enter the time to be counted on the 1 – 0 

keypad. For example, to count 3 minutes 

exactly, enter 3 0 0 for three minutes, zero 

seconds. To count 9 hours, 45 minutes and 

30 seconds, enter 9 4 5 3 0.

4. Press START/STOP to start the count down. 

Press START/STOP button to interrupt 

the count. Press START/STOP button again 

to resume the count.

5. To clear the count before reaching zero, stop 

the count by pressing START/STOP. Then press 

the CLEAR button. 

Note:

 The count must first be stopped to prevent 

accidental clearing of the display.

6. On reaching zero the alarm will sound for one 

minute, the display will flash and will start 

Model: TM23-S

Direct Entry Timer & Clock

Counts 24 hours by minutes & seconds

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