Light colour is also known as colour temperature and is expressed in Kelvin (K). You can choose from:
Extra warm white (1700K - 2700K). Atmospheric light. For places with a relaxing character.
Warm white (>2800K). Neutral and soft light. For common areas such as halls, corridors, foyers.
Cool white (>3400K). Fresh and natural light. Good for focus/concentration in schools and offices
Daylight white (>5000K). Equals natural daylight. Suitable for situations where a lot of light is needed.
Luminous Flux (Lumen)
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.
This indicates which wattage of your old/conventional lighting is replaced by this LED product.
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).
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.
Impact Protection (IK)
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.