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Fig. 1

Fig. 2

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Operating Instructions
Roller shutter timer
Timer U26

The timer U26 is an electronic roller shutter timer for operating a 230 V tubular 

drive. If more than one drive is controlled using the U26, the drives must be de-

coupled by relay controls. There is no need for decoupling in the case of drives 

with electronic limit switching.

The U26 timer can easily be extended to form a convenient sun protection con-

trol unit, providing additional light-dependent control for the roller shutter, using 

the LS26 light sensor, which anyone can attach without difficulty. You can obtain 

the LS26 light sensor, as well as other control elements, from your roller shutter 

dealer.

 

 Caution

•  Please keep the instruction manual safe!
•  Risk of injury due to electric shock.
•  Connections to the 230 V mains must always be performed by a spe-

cialist.

•  Disconnect the connecting cable from the power prior to installation.
•  Always comply with regulations of local energy supply companies as 

well as VDE 100 provisions for wet and damp rooms during installa-

tion.

•  Only use in dry rooms.
•  Only  use  unmodified  original  parts  from  the  control  unit  manufac-

turer.

•  Keep people out of the system’s range of travel.
•  Keep children away from control units.
•  Observe all pertinent country-specific regulations.
•  If the system is controlled by one or several appliances, the system’s 

range of travel must always be visible during operation.

•  When connecting the control cables (protected extra-low voltages), 

only use cables with sufficient electrical strength.

•  Device contains small parts that can be swallowed.

The U26 is designed for fitting in a flush-mounted switch box or a surface-

mounted housing. Install as follows:

•  Remove the front plate by pulling it off.

•  Pull the connecting terminal off from the rear of the timer (plug-in terminal), 

and make the electrical connections according to the connecting diagram 

(Fig. 1). Avoid unnecessarily long connecting wires.

•  Push the connecting terminal on.

•  Fasten  the  timer  by  inserting  the  two  screws  supplied  in  the  holes  of  the 

flush-mounted box (Fig. 2).

•  Then switch on the power supply. Please note that the first time the unit is 

operated, there may be a delay in switching on the timer, as the timer must 

first must initialise itself. The number 

 (Fig. 3) will appear flashing on the 

display within 10 seconds.

If, after a power failure (5 hours), or at the time of initial installation, nothing ap-

pears on the display within 10 seconds, press the "Reset" button illustrated on 

Fig. 2. 

 now appears flashing on the display.

•  Now check the direction in which the drive is operating using the UP (

and DOWN (

) buttons. If the roller shutter moves in the opposite direction 

to the button you have pressed, turn off the power to the system and swap 

the connecting wires for the UP and DOWN commands at the connecting 

terminal.

•  After you have made the settings for the time, the switching times and the 

sunlight-twilight parameter (the sunlight-twilight parameter can only be ad-

justed when the sensor is connected), fit the front plate.

Application

Assembly

Fig. 3

Becker-Antriebe GmbH

Friedrich-Ebert-Strasse 2-4

35764 Sinn/Germany

www.becker-antriebe.com

green/yellow

green/yellow

blue

blue

black

black

brown

Mains

230 V

Timer U26

Plug-in terminal

Drive

Important information for:

• Fitters / • Electricians / • Users

Please forward accordingly!

These instructions must be kept safe for future reference.

Reset
Adjusting  the  set  values 

for:

sun protection (S)

twilight function (d)

running time (L)

reversal time (U)

Increase the upward trav-

el distance or adjustment 

value

Reduce the downward 

travel distance or adjust-

ment value

Hole  for  fastening 

screw

Switch between man-

ual, automatic or holi-

day mode

Setting the time and 

the day of the week, 

change between sum-

mer and winter time

Programming 

the 

switching  times,  offset 

function

Unlock button for the 

light sensor plug

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