| These PIR detectors differ mainly in the design of the Fresnel lense installed, their adjustment with regard to ambient conditions, the type of fitting and the properties of the movement or brightness signal. |
| When a lense is described as of 4 inch focus, it means that such a lens is capable of bringing parallel rays to a point at a distance of 4 inches from the lens. |
| As described in this paper, the right to reparation implies that justice be conceived and conducted through a holistic lense. |
| Vautex Elite ET features a large lense which is firmly integrated into the suit, reducing the overall weight. |
| Additionally you can receive lenses of different colour with which you can replace the red or the orange lense. |
| It is suitable for making DIY-PROJECTORS in the 'Sandwich method', because this lense is a Single Piece with fixed Focal Length. |
