A person’s desire to create for himself the most comfortable conditions led to the invention of a device such as a switch with a motion sensor or, having more accurately accurately, an automatic infrared switch.
In addition to the electronic switch, its device includes an passive infrared radio detector that responds to heat sources located in the field. Thus, when a person appears in the premises, the detector gives a signal and light automatically turns on.
But there is a small nuance: it reacts only to moving objects, therefore, when the movement stops, the light goes out. Different models have a different reaction also different. For example, the Sagan Bi -switch (Legrand) has a shutdown time when the movement is stopped ranging from 6 seconds to 6 minutes, and the Alpha Nea (ABB) model can be from 2 seconds to half an hour.
The sensor sensitivity zone is determined by the sector of the thin horizontal disk, which differs depending on the model of the device. So, in Sagan it is 130, and the alpha Nea -180. The radius of the indoors can be 10-15 meters. It is noteworthy that the horizontal disc is at the level of human growth and, therefore, it does not respond to pets to pets. The field of action of the device, as well as the dimensions of the moving object, can be adjusted at your discretion.
For daytime day, the circuit breaker with the traffic sensor provides for the adjustment function, thanks to which you can set the time when the device will work and when not. So, you can set the mode, for example, day – evening – night or a more smooth transition from 5 to 5000 lcs. The modes are set depending on the models. Some provide manual control, in case of case that the light is constantly burning.
The assortment of such products is represented by various devices that can work with both lumicon -scheme and low -voltage halogen lamps. The cheapest options are provided for ordinary incandescent lamps. There are also universal models, for example, KOPP production products Infra Control.
Some firms produce modified models in which, through special plastic lining, you can adjust the viewing angle. Such devices are the Esprit series of the German manufacturer Gira.
