Ledure Astra Surface Series provides Hi - Tech 3 step dim feature as well 3 in 1 colour mode selection option through click of a switch . Astra series has unique modern technique of in built dimming mechanism where you can dim the bulb using the switch you use to turn it on. Its Simple ! You turn the switch off and then back on , and it will give you a change in the output of your light. It gives you three level of lighting , without need of an expensive dimmer switch .They work on an output sequence of 100%-50%-10%, one after the other. Moreover you can adjust the colour temperature of these downlights . These downlights are flicker Free so you will get the best lighting effect without any compromise. These downlights are energy saver , Anti Glare effect & high brightness. .