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█ T21 - 1 / 3 / 6 / 3H - 4A20

※ Please turn off power to change Time range

█ T21 - 1/3/6/3H - 4D24

Connection diagram

Time Range

T21- 1/3/6 - 4A22, T21H - 3 - 4A22

T21- 1/3/6 - 4D24, T21H - 3 - 4D24

T21- 1/3/6 - 2A22, T21H - 3 - 2A22

T21- 1/3/6 - 2D24, T21H - 3 - 2D24

14(~)

13(~)

9

1 5

10

2 6

11

3 7

12

4 8

14(~)

13(~)

9

1 5

12

4 8

14(+)

13(-)

9

1 5

10

2 6

11

3 7

12

4 8

14(+)

13(-)

9

1 5

12

4 8

T21- 1/3/6 - 4A22, T21H - 3 - 4A22

T21- 1/3/6 - 4D24, T21H - 3 - 4D24

T21- 1/3/6 - 2A22, T21H - 3 - 2A22

T21- 1/3/6 - 2D24, T21H - 3 - 2D24

14(~)

13(~)

9

1 5

10

2 6

11

3 7

12

4 8

14(~)

13(~)

9

1 5

12

4 8

14(+)

13(-)

9

1 5

10

2 6

11

3 7

12

4 8

14(+)

13(-)

9

1 5

12

4 8

Model

Time Range

Time setting Range

Setting

9999 s

1 sec

0.1 ~ 1 sec

10 sec

1 ~ 10 sec

1 min

0.1 ~ 1 min

10 min

1 ~ 10 min

9999 s

3 sec

0.3 ~ 3 sec

30 sec

3 ~ 30 sec

3 min

0.3 ~ 3 min

30 min

3 ~ 30 min

9999 s

6 sec

0.6 ~ 6 sec

60 sec

6 ~ 60 sec

6 min

0.6 ~ 6 min

60 min

6 ~ 60 min

9999 s

3 hrs

0.3 ~ 3 hrs

6 hrs

0.6 ~ 6 hrs

12 hrs

1.2 ~ 12 hrs

24 hrs

2.4 ~ 24 hrs

※ Select output mode by 2 switches at the bottom of the four switches.

Operation

TIME 
RANGE

POW

1/3/6

sec

10/30/60

sec

1/3/6

min

10/30/60

min

t

t

t

OUT MODE

TIME 
RANGE

POW

1/3/6

sec

10/30/60

sec

1/3/6

min

10/30/60

min

t

t

t

OUT MODE

Part name and function

Name

Function

Output ON 

indicator lamp (UP)

After setting time, light ON (Red)
at the same time with output operation

② Power indicator lamp (PW) Light ON after power ON (Green)

Time setting knob

Set timer operation time, Setting time can be changed
during operation of timer.

Time unit

Time unit of setting time (min/sec, hrs).

Time range setting

(TIME RANGE)

Depend on suffix code, Select time range by DIP
switches on the side

Operating mode setting

(OUT MODE)

Select output mode by DIP switches on the side

Output Mode

Operation Description

Timing Chart

Setting

t

Power

Output

t

t

t

Power

Output

t

Power

Output

t

t

t

Power

Output

When the power is ON, the

output will be ON after setting

time.

Power

Set time

Set time

Reset time

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

Power delay

Power

Set time

Set time

Set time

Set time Set time

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

Flicker OFF Start

Power

Set time

Set time

Reset time

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

Interval

Power

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

플리커 ON스타트

Set time

Set time

Set time

Set time Set time

t

Power

Output

t

t

t

Power

Output

t

Power

Output

t

t

t

Power

Output

When the power is ON, the

output is ON and it will be OFF

after setting time.

Power

Set time

Set time

Reset time

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

Power delay

Power

Set time

Set time

Set time

Set time Set time

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

Flicker OFF Start

Power

Set time

Set time

Reset time

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

Interval

Power

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

플리커 ON스타트

Set time

Set time

Set time

Set time Set time

t

Power

Output

t

t

t

Power

Output

t

Power

Output

t

t

t

Power

Output

When the power is ON, the

output is OFF and it repeatedly

outputs OFF and ON with the

setting

time interval.

Power

Set time

Set time

Reset time

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

Power delay

Power

Set time

Set time

Set time

Set time Set time

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

Flicker OFF Start

Power

Set time

Set time

Reset time

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

Interval

Power

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

플리커 ON스타트

Set time

Set time

Set time

Set time Set time

t

Power

Output

t

t

t

Power

Output

t

Power

Output

t

t

t

Power

Output

When the power is ON, the

output is ON and it repeatedly

outputs ON and OFF with the

setting time interval.

Power

Set time

Set time

Reset time

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

Power delay

Power

Set time

Set time

Set time

Set time Set time

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

Flicker OFF Start

Power

Set time

Set time

Reset time

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

Interval

Power

Time-limit NC

Time-limit NO

Output indicator

Power on indicator

UP LED

PW LED

⑬-⑭

①-⑨, ②-⑩, ③-⑪, ④-⑫

⑤-⑨, ⑥-⑩, ⑦-⑪, ⑧-⑫

플리커 ON스타트

Set time

Set time

Set time

Set time Set time

Factory set

Factory set

ON-Delay

Interval

Flicker OFF-start

Flicker ON-start

Factory set

Factory set

Factory set

※ t : Set time

※ t : Set time

※ t : Set time

※ t : Set time

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