LUMENS – The measure of the amount of visible light being produced. This is the only way to compare LED light bulbs with other types of bulbs. See our LED Replacement Bulbs page
WATTS – The measure of the amount of power the LED bulb uses.
SUPPLY VOLTAGE – The type and range of voltage the LED light bulb requires to operate correctly. This could be normal mains voltage i.e. 240V AC or for for example 12V DC in which case the LED bulb will be supplied by a transformer.
BASE TYPE – This is the type of fitting the LED bulb can be used in. If you need more help with choosing the right fitting please see our LED Fitting Guide.
CERTIFICATION – CE and RoHS are the standards that the LED bulbs must comply with to be sold in Europe. CE covers the electrical/electronic side of things whilst RoHS deals with hazardous substances.
IP GRADE – IP (Ingress Protection) define the level of sealing effectiveness the LED light meets to prevent ingress of foreign bodies and moisture. The first number relates to foreign bodies whilst the second relates to moisture. For example an LED bulb grade of IP65 means it is completely dust tight and is water tight against a jet of water or waves. For more information see our LED Bathroom Lighting Guide.
The IP grade is important for outdoor lights or lights in rooms where water is present e.g. bathrooms where electrical regulations dictate what grades are required in specific areas to ensure the user is protected from the risk of electric shock.
COLOUR RENDERING INDEX – This defines the LED lights ability to accurately reproduce the colour compared to a reference light source on a scale of 0 to 100. The higher the number the closer the colour is to the standard. In general values of 75 to 85 are acceptable for normal lighting.
COLOUR TEMPERATURE – This is a measure of the colour produced by the LED lamp raging from warm yellowish through to cool blueish. The higher the value in degrees Kelvin the cooler more blueish the light will be.