Lighting Products and Fixtures Design Dahom CFL Sensor Light Sensor Activated Energy Saving Lamp by Dahom Dahom CFL Sensor Light turns itself on when the sun sets and the night begins. It is used in outdoor light fixtures in the driveway or gardens. So you will never be left in the dark! It’s patented sensor activates the light once it senses that the environment is dimmer. This saves you the trouble of physically turning on the light. Or the cost of leaving the light on 24/7. It behaves and looks exactly like the traditional Thomas Edison incandescent bulb but without the heat generated and the energy used. In fact, it saves at least 65% of the energy used.