Sensors are used to make lights turn on or off automatically. With sensors, you will experience an extra comfort in lighting. We can distinguish several types of sensors. Motion sensors, for example, react to movement. This can be useful in offices, warehouses or at your own front door. By using a motion sensor, you make sure that lighting is used only when someone is actually there to need it. Twilight sensors, on the other hand, react to sunlight. When the sun comes up, the light turns off automatically. This comes in handy for lighting that is used the whole night trough but is not needed during the day. Choose for a sensor with a high IP rating if you want to apply your sensor outdoors.