231 reactions · 23 shares | What is a sensor? Sensors are devices, modules, or subsystems that detect and respond to input from the physical environment. Their signals are then converted to a display panel or transmitted electronically for processing by computers. Read more: https://bit.ly/2V21zz6 | Saab | Facebook

Automatic Lighting Control Using Sensors and Contactors. This response discusses the use of light sensors, photocells, and contactors in lighting systems. It explains how these components can be used to automatically switch on and off lighting based on the presence or absence of light, particularly in the case of street lighting where heavy loads need to be switched simultaneously.Automation is used in electrical engineering to make work easier, safer and faster. Home automation has become the n