A light sensor is basically a device that identifies the amount of light being shed upon it and then turns on a light source in order to illuminate the area. Generally these devices are installed within locations that require illumination at night. Light sensors are connected to a light source which is turned on automatically when the amount of light upon the device drops below a certain level. Therefore they are perfect for installation at locations which need more security at night. A motion light sensor is basically a device that detects motion within a certain area and then turns on a lighting device automatically.
Motion sensor lights are extremely resourceful devices and can be used for a variety of purposes such as providing outdoor as well as indoor security. They are installed in locations such as gardens, pathways as well as garages and hallways. The main purpose of these gadgets is to provide light in a timely manner as well as scaring off individuals that might be attempting to gain unauthorized access. Therefore it has to be powerful enough to fulfill both these aims. Outdoor security light sensors are usually equipped with standard floodlight lamps as well as halogen lamps which provide more powerful lighting. The illumination needs to be within a particular arc or a powerful tightly focused beam.
Similarly, indoor security lighting usually requires LEDs (Light Emitting Diodes) that turn on when the amount of light in the room drops or when motion is detected in the vicinity. These lights have a normal time delay between 6 seconds and 12 minutes. They also have a manual override system which can be utilized in situations of a continuous on/off cycle in order to avoid damage to the device. Security lights are equipped with motion detector devices that are microwave sensors, infra red sensors or ultrasonic sensors. Microwave sensors emit microwaves that are reflected off of objects within a certain range in order to identify movement. These detectors have an extremely long range and can pass through walls as well. On the other hand, infra red detectors are cheap and have a shorter range. They function by identifying heat signatures within an infra red light spectrum. They are generally less sensitive than ultrasonic as well as microwave motion detectors.
On the other hand, ultrasonic motion detectors are the latest technological advancement in motion detection technology. They have a far greater range than microwave devices as well as have an inherently high level of sensitivity towards motion. Similarly, a light sensor functions by utilizing a light emitting diode. An LED basically turns on an external light source when the amount of light within a particular area drops by a certain level.
Comments on this entry are closed.