Best Led Street Light

How does a street light turn on automatically at night?

A street light turns on automatically at night using a device called a photoresistor or light sensor. The photoresistor is a light-sensitive sensor that detects the presence or absence of light.During the day, when there is sufficient daylight, the photoresistor's resistance is low, preventing current flow to the street light. This keeps the street light turned off as the light sensor determines that there is no need for artificial lighting.However, when the sun sets and the natural light decreases, the resistance of the photoresistor increases. This change in resistance is detected by the street light's controller or circuitry. Once the resistance crosses a specific threshold, it triggers the street light to turn on.The controller then sends a signal to the electronic ballast or driver, which starts supplying power to the light fixture. The street light bulb or LED is then illuminated, providing artificial lighting for the street during the night.This process is repeated every day, allowing the street light to automatically turn on at dusk and turn off at dawn, without the need for manual intervention.

How much do led street light cost

The cost of LED street lights can vary depending on various factors such as the brand, quality, wattage, and features. On average, LED street lights can range from $30 to $500 per unit. However, it is important to note that there may be additional costs involved, such as installation charges and maintenance fees. It is recommended to contact suppliers or manufacturers directly to get accurate and up-to-date pricing information.