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    Sensor switch


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      The device of 903A is an indoor movement detector for automatic lighting control


    Easy to be installed on the wall


      The device corresponds to EN 60669-2-1 for designated installation


     Dual sensor switch (Infrared sensor+ microphonics)


     Button for permanent light and permanent light OFF


     Permanent light and permanent light OFF indicator (red LED behind lens)


     Catch(Design shade for function adjustment, folding)


     Twilight setting 2 - 2000 lux


     Time setting 10 sec. - 30 min.


    Apply to various locations: small-scaled stores or factories, offices, homes,


     such as corridors, staircase, dining rooms, cellars, garages etc.


      Designed for use in normal environment


      Intended for indoor installation


    Technical data



    (H x W x D) 80 x 80 x 55 mm



    Filament bulbs, 1000 W max., operating on 230 V AC Fluorescent lamp, 500 W max., at cos  = 0.5,

    inductive load at 230 V AC

    4 x 58 W each max., C 88 μF operating on 230 V AC *1)


    230 V, 50 Hz

    3-lead connection (L, L, N)

    Contact gap:


    μ, contact clearance of less than 1.2 mm between

    the contacts when unit is switched off.


    Installation height:

    approx. 1.1 + 2.2 m *2)

    Sensor technology:

    Infrared sensor+ microphonics

    Transmission output:

    approx. 1 mW

    Angle of coverage:

    180° with 90° angle of aperture

    180° with 90° angle of aperture


    max. 8 m

    Twilight setting:

    2-2000 lux

    Time setting:

    10 sec. - 30 min.

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