Tronic Dusk To Dawn Auto On/off Photocell Light Switch

Automatic lighting, such as street lights, usually use photocell sensors—also known as light eyes—to sense the amount of ambient light. Once the photocell detects a low enough light level, it will turn on the light, or conversely, an increase in external light level will turn off the light.
The photocell consists of resistors attached to the photosensitive plate. When more light shines on the light panel, the resistance (current through the resistor) will change and the light will turn on or off. This technology is suitable for all types of outdoor places.
Since no user input is required, there is no need to worry about setting a timer or forgetting to turn on the lights. The working principle of a photocell is similar to that of an optical switch-therefore, a photocell sensor is sometimes called a photoelectric switch.
Photocells work throughout the year, activated at dusk and turned off at dawn, even if the day is longer in summer and shorter in winter. Since they can perceive the amount of light instead of working in a fixed time, they do not need to be adjusted when the sunrise or sunset changes with the seasons.
Many outdoor lighting devices use motion sensors. However, photocell sensors and motion sensors usually have different uses. For example, motion sensors may help keep stray animals away from trash cans and trash cans, while photocells can keep parking lots safe and light continuously for a long time.Automatic lighting, such as street lights, usually use photocell sensors—also known as light eyes—to sense the amount of ambient light. Once the photocell detects a low enough light level, it will turn on the light, or conversely, an increase in external light level will turn off the light.
The photocell consists of resistors attached to the photosensitive plate. When more light shines on the light panel, the resistance (current through the resistor) will change and the light will turn on or off. This technology is suitable for all types of outdoor places.
Since no user input is required, there is no need to worry about setting a timer or forgetting to turn on the lights. The working principle of a photocell is similar to that of an optical switch-therefore, a photocell sensor is sometimes called a photoelectric switch.
Photocells work throughout the year, activated at dusk and turned off at dawn, even if the day is longer in summer and shorter in winter. Since they can perceive the amount of light instead of working in a fixed time, they do not need to be adjusted when the sunrise or sunset changes with the seasons.
Many outdoor lighting devices use motion sensors. However, photocell sensors and motion sensors usually have different uses. For example, motion sensors may help keep stray animals away from trash cans and trash cans, while photocells can keep parking lots safe and light continuously for a long time.