A light sensor turns light energy (photons) into electronic signal (electrons). It does this when the electrons in the light sensor absorb the photons from the light. This increases the kinetic energy of the electrons, which causes them to. A light sensor turns light energy (photons) into electronic signal (electrons). It does this when the electrons in the light sensor absorb the photons from the light. This increases the kinetic energy of the electrons, which causes them to be emitted from the sensor, producing an electrical current. This is known as the photoelectric effect. Howeve. PhotodiodesThis type of light sensor converts light into an electrical current. The current in these sensors can only flow one way which means all energy is absorbed by the devices. Fire or smoke detectors often use a photodiode.PhotoresistorsSometimes referred to as a photocell, this light sensor is passive and changes its resistance in proportion to the amount of light received. Photocell sensors can be used for battery or solar-powered outdoor lighting. As the day gets darker, the sensor automatically switches a light on until sufficient natural light returns.PhototransistorsLight sensors have an impressive list of benefits when you implement them into your home or business. These include: 1. Energy efficiency 2. Low cost 3. Better security 4. Simple installation 5. Long lifespan 6. Health and safety requirements 7. Low maintenanceWhether you need light sensors for indoor or outdoor lights, RS is the place to get them. We're one of the leading suppliers of light sensors and other electronic products in North America. We have long-standing and positive relationships with leading manufacturers in the industry, which is why we stock more than 100 light sensor products of the hi.
