Ledvance LED Office Line Cuboid Ceiling Black 42W 4400lm - 840 Cool White | 3-Step Dimmable

Our all-in warranty is fully included in the product price and covers both hidden defects and technical defects of the product that occurred before delivery. The warranty period differs per product and ranges from 1 year to a maximum of 7 years.

The lifespan is an indication of the number of hours a product will last. This refers only to the hours the product is actually on. LED lighting has a significantly longer lifespan than conventional lighting. LED lighting therefore lasts much longer. How long you can actually use a product depends on the extent of its (daily) use.

The technology indicates the operating base of a light source. The most well-known and energy-efficient example is LED. Other techniques include Halogen, gas discharge, TL (fluorescent) and the light bulb.

Lighting with a voltage of 220-240 Volt can be connected directly to the mains. Lighting with a different mains voltage (12 Volt and 24 Volt) requires an (electronic) transformer.

The wattage indicates how much energy a light source consumes. With LED lighting, the wattage is considerably lower than with conventional lighting. LED lamps with a higher wattage generally also have a higher light intensity (number of lumens).

This indicates which wattage of your old/conventional lighting is replaced by this LED product.

Dimmable bulbs work in combination with a dimmer switch and allow you to determine the desired light output. Dimming also provides energy saving potential because less power is required when the lamp is producing less light.

Many LED fixtures in our range have a built-in LED module, but there are also fixtures that are available excluding the bulb. In that case, we have a suitable LED bulb, LED spotlight bulb or LED fluorescent tube available for every fixture without a bulb.

The colour code is a combination of colour rendering (CRI) and light colour (Kelvin). The first number indicates the colour rendering (1 = very poor colour rendering, 9 = maximum colour fastness). The second and third number contains the light colour. Example: the colour code 830 consists of good colour rendering (8) and warm white light (3000K).

Colour rendering is also known as Colour Rendering Index (CRI) and indicates the extent to which a light source reproduces colours, compared to the actual colours in daylight. Products with a good (80-89 Ra) or excellent (90-99 Ra) colour rendering show minimal deviations in the colour spectrum.

The light color indicates the color of the light emitted: white, colored, or UV. For many products in our assortment, the light is white, available in a range from very warm white to daylight white (expressed in Kelvin). With colored light, you have two options: 1. A single fixed color, such as red or green. 2. RGBW, which means you can adjust the light color at any time: white or colored.

The colour control type tells you in which way you can regulate the colour of the light. You have the following options:

1. Single colour: This light has one fixed light colour. You cannot change it.
2. CCT: You choose from 2 or 3 fixed colours via a switch, such as warm white or cool white.
3. Tunable white: The white light can take any values in the listed Kelvin scale, for instance 2200K up to 6500K.
4. Dim to warm: Dimming makes the light warmer (more yellow). The more you dim, the warmer the colour.
5. RGB: You can set the light to almost any colour. From red to blue, you fill it in completely as you wish.

By choosing your preferred light colour options, you are one step closer to the right light product.

The number of lumens (lm) is the light output of a light source. The higher the number of lumens, the more light the light source emits. The wattage and the number of lumens are not connected to each other. An LED lamp with a low wattage can have a higher number of lumens than a conventional lamp with a high wattage.

The Luminous Efficacy (lm/W) indicates how efficiently a light source uses energy. We divide the number of lumens by the wattage. The higher the number, the more efficient a product is in terms of energy consumption. LED lighting has a considerably higher lumen/Watt ratio than conventional lighting.

The power factor indicates how efficiently a luminaire uses electricity. The rule is: the higher the power factor, the more efficient the power consumption. A product with a high power factor (0.85 - 0.95) is also the safest. This is because the amount of unnecessary power consumption (blind current) is very limited.

A fixture with a tiltable design makes it possible to direct the lighting specifically at an object or surface. This can play a particularly important role in shops (putting a new collection in the spotlight) or galleries (accentuating works of art). It can also influence the purchasing behaviour or interpretation of visitors.

Are you specifically looking for an (LED) fixture that you can install on the ceiling, wall or floor? With this filter, you can easily select your preferred type of mounting. Please note that certain fixtures can be mounted in multiple ways using the installation materials supplied (e.g. a LED bulkhead). Mounting is also possible using individually purchasable fixture accessories, such as a frame or suspension kit for a LED panel.

Lighting with a built-in emergency lighting unit (battery) continues to burn for a certain time if the power fails.

The IP value indicates the degree of protection against the ingress of moisture and dust. The 1st digit (0 = not protected until 6 = completely dustproof) indicates the protection against dust. The 2nd digit (0 = not protected until 8 = protected against immersion) indicates the protection against water. Products with an IP44 rating are splashproof and products with an IP65 rating or higher are (completely) dustproof and waterproof.

The impact protection value (IK) stands for impact resistance and protection against vandalism. This is expressed in combination with 2 digits (IK00 - IK10). Products with IK00 are not protected against resistance. Products with IK10 offer resistance to shocks of 20 Joule and are also vandal-proof.

The colour of the fixture can play a major role in the interior design of a room. You can opt for a neutral white design or a darker colour, such as black or silver, to make the light source stand out or even turn it into a decorative feature on its own.

It may happen that the length of this product differs from your old lighting fixture. As a result, the product does not fit in your current fixture or in the relevant place.

Lighting with a sensor only turns on when it receives a specific signal. This reduces energy costs. The (built-in) sensors respond to darkness (twilight switch) and/or movement (motion sensor).