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  • New item   LED T5 integrated linear luminaire | 20 W | 2700 K | 1600 lm | 230 V | 145 cm | frosted | with switch | OPTONICA | TU20-A2-5579 | 3800156655799
    New item   LED T5 integrated linear luminaire | 20 W | 2700 K | 1600 lm | 230 V | 145 cm | frosted | with switch | OPTONICA | TU20-A2-5579 | 3800156655799 1

    LED T5 integrated linear luminaire | 20 W | 2700 K | 1600 lm | 230 V | 145 cm | frosted | with switch | OPTONICA | TU20-A2-5579 | 3800156655799

    Code: TU20-A2-5579
    Barcode: 3800156655799
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  • Product description

    LED T5 integrated linear luminaire | 20 W | 2700 K | 1600 lm | 230 V | 145 cm | frosted | with switch | OPTONICA | TU20-A2-5579 | 3800156655799

    TU20-A2-5579 is a slim surface-mounted LED luminaire with the LEDs, driver and frosted diffuser combined in one housing. This 145 cm, 20 W model delivers 1600 lm of warm white (2700 K) light and connects directly to the 230 V mains – no ballast, starter or G5 lampholders needed.

    Key point:
    The 145 cm model gives the most light in a single line – for workshops, storerooms, long shelves or a shared base of several cabinets. The switch on the housing lets you turn the light on locally without running a separate control cable.
    Power / flux
    20 W / 1600 lm
    Length
    145 cm
    Light colour
    2700 K – warm white
    Control
    Switch on the housing

    How it works

    The luminaire is fixed to a surface – the underside of a cabinet, a shelf, a wall or a ceiling – and connected to 230 V AC. The integrated driver converts mains voltage into the current the LEDs need, so no additional ballasts or transformers are required.

    The frosted diffuser spreads the light at a 120° beam angle and reduces glare: mounted under a cabinet, it lights the worktop evenly without bright spots. A colour rendering index of Ra > 80 shows food, materials and paint colours naturally.

    Distributor catalogues list the A1 / A2 series luminaires as linkable into a continuous line. The manufacturer does not publish the maximum number of linked units or total power, so it is worth agreeing a longer line in advance.

    Why choose TU20-A2-5579?
    1600 lm from 20 W (~80 lm/W) – a 145 cm line of light with no extra components. Switch on the housing – no wall switch needed.

    Technical specifications

    Product type Integrated LED T5 linear luminaire (furniture / under-cabinet)
    Manufacturer / code OPTONICA / TU20-A2-5579
    Barcode (EAN) 3800156655799
    Series A2
    Power 20 W
    Luminous flux 1600 lm
    Efficacy (calculated) ~80 lm/W · ~1100 lm/m
    Colour temperature 2700 K (warm white)
    Colour rendering CRI Ra > 80
    Beam angle 120°
    Supply voltage 230 V AC
    Length 145 cm
    Switch on housing Yes
    Linking Linkable with luminaires of the same series
    Diffuser Frosted
    Housing material Plastic
    Protection rating IP20 (dry rooms only)
    Mounting Surface – under a cabinet, on a shelf, wall or ceiling
    Dimming Not specified – treat as non-dimmable

    Main functions

    • Integrated driver – connects directly to 230 V, no ballast, starter or transformer needed.
    • 1600 lm luminous flux – ~1100 lm per metre of length, enough to light a worktop or shelf.
    • Frosted diffuser, 120° – even light without glaring spots.
    • Ra > 80 – natural colours of food and materials.
    • Switch on the housing – turned on locally, without a wall switch or extra cable.
    • Linkable line – several luminaires of the same series form one line with a single supply point.

    Where is it used?

    • Kitchen worktop under wall cabinets
    • Shelves, bookcases and display cases
    • Inside wardrobes, closets and niches
    • Workshop benches, storerooms, dry garages
    • Office furniture, counters and product shelves
    • Accent lighting in dry corridors and stairwells

    Use by need

    For homeowners.
    Warm light on shelves, living-room furniture and niches creates a cosy feel and is easy on the eyes in the evening.
    For furniture makers.
    Built into furniture without a separate driver – only a 230 V connection is needed.
    For shop fitters.
    Warm light brings out wood, textiles and food in display cases.

    Practical use

    If a workshop needs light over a long workbench or shelf, one 145 cm luminaire delivers 1600 lm. For a deeper bench, install two parallel lines – there will be fewer shadows.

    Pros

    • All-in-one – no separate driver or ballast
    • ~80 lm/W efficacy
    • Frosted diffuser, no glare
    • Colour rendering Ra > 80
    • Switch on the housing
    • Linkable into a continuous line
    • Several lengths and colours in the same series

    Cons / limitations

    • IP20 – dry rooms only
    • Dimming not specified – do not use with a dimmer
    • LEDs cannot be replaced – if it fails, the whole luminaire is replaced
    • Maximum number of linked luminaires not published

    Safety and installation notes

    • Before installation, switch off the circuit at the panel and check that no voltage is present.
    • Do not install in bathrooms, in the splash zone above a sink, outdoors or in damp rooms.
    • Do not install directly above a cooker or oven – plastic housing, heat and grease vapour.
    • Do not connect to a dimmer.
    • Route the cable so that it cannot be pinched by doors or shelves.
    • Connection to a fixed electrical installation must be carried out by a qualified electrician.

    Quick selection guide

    20 W
    1600 lm
    2700 K
    145 cm
    230 V
    IP20
    With switch
    Suitable when you need:
    • A long bright line for a workshop, storeroom or shelf
    • Cosy, warm light
    • Switching on locally, without a wall switch
    Check before use:
    • Internal mounting length – at least 148 cm (including room for the cable)
    • The room is dry, the luminaire is away from water and heat
    • Where the 230 V supply point will be
    • For the whole line – luminaires of the same series and the same K
    Important reminder: This is not an LED T5 (G5) tube – it does not fit an old fluorescent luminaire. To keep an old housing, choose an LED T5 tube with a G5 base.

    FAQ

    Can it replace an old T5 fluorescent tube?
    No – it is a complete luminaire with an integrated driver and has no G5 pins.
    Will it fit my cabinet?
    Yes, if the internal width between the side panels is at least 148 cm.
    Can it be connected to a dimmer?
    No – dimming is not specified, and with a dimmer the luminaire may flicker or fail.
    Can several luminaires be linked?
    Yes, A1 / A2 series luminaires link into a line; for lines longer than 3–4 units, check the permitted power with us.
    Is it suitable for a bathroom or outdoor canopy?
    No – IP20 offers no protection against water; the luminaire is for dry rooms only.
    Does the switch turn off the whole linked line?
    The switch controls this luminaire, so a wall switch is more reliable for the whole line.

    LED T5 integrated linear luminaire | 20 W | 2700 K | 1600 lm | 230 V | 145 cm | frosted | with switch | OPTONICA | TU20-A2-5579 | 3800156655799

    TU20-A2-5579 – integrated LED T5 luminaire: 145 cm, 20 W, 1600 lm, 2700 K, 230 V, with a switch on the housing. Mounted under kitchen cabinets, on shelves and in workshops, linkable into a continuous line.

    Published: 2026-10-30 · Data checked against manufacturer and supplier data: 2026-10-30

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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