merten MEG5252-03.. Operating Instructions Download Page 2

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In combination with 2-gang insert

• With push-buttons

– right push-button: channel 1
– left push-button: channel 2

• With rotary knob

– switch both channels together by rotating or briefly 

pressing the knob.

|

If a channel is already switched on, then pressing 

the rotary knob will switch this channel off. If both 

channels are in the same state, then pressing the 

rotary knob will switch both channels together.

Dimming loads

In combination with 1-gang insert

• With push-buttons

• With rotary knob

– by rotating the knob

<  0,5 s

<  0,5 s

> 0,5 s

In combination with 2-gang insert

• With push-buttons

– right push-button: channel 1
– left push-button: channel 2

• With  rotary  knob

– dim both channels together. 
– simultaneously to max. / min. brightness.

|

If the channels have different brightness values 

then the difference between these remains con-

stant when dimming to max. / min. brightness. 

When one channel reaches the max. / min. 

brightness, the difference is reduced until the 

common max. / min. brightness is reached.

Controlling blinds

• With push-buttons

– raising/lowering (> 0.5 s)
– up/down in steps (< 0.5 s)

• With  rotary  knob

– raising/lowering (fast half turn of the knob)
– up/down in steps (slow rotation of the knob)

> 0,5 s

> 0,5 s

<  0,5 s

> 0,5 s  

<  0,5 s

> 0,5 s

Retrieving local light or blind scenes

(Only in combination with 1-gang inserts)

Standard scenes

All devices are delivered from the factory with preset-

tings for a light or blind scene.

1

Retrieve scene: press the left 

upper

 push-button or 

the left 

lower

 push-button 

briefly

.

• The devices of the light scene adopt the saved bright-

ness value.

• The devices of the blind scene initially move to the up-

per position. After a running time of 2 minutes, they 

move to the saved position.

Changing and saving local light scenes

(Only in combination with 1-gang inserts)

1

Set the brightness value.

2

Save scene: press and 

hold

 the left 

upper

 push-

button or the left 

lower

 push-button.

All lamps are switched off briefly and then back on again 

to indicate that the saving procedure was successful. 

Then the lamps adopt the saved brightness value.

Changing and saving local Basic blind 

scenes

For Basic blind scenes, you can only save the fixed posi-

tion values of "fully up/down".

1

Move the blind to the upper position and wait for the 

running time of 2 minutes until the LED segments go 

out.

2

Set the desired position of the blind:

–  Position "up": no further settings required
–  Position "down": lower the blind

3

Save scene: press and 

hold

 the left 

upper

 push-

button or the left 

lower

 push-button.

The blinds are lowered and raised by one step to indicate 

that the saving procedure was successful.

Left upper push-but-

ton:

Light on (100%) / blind up

Left lower push-but-

ton: 

Light off / blind down

< 0,5 s

> 3 s

1

2

> 3 s

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3

2

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