While they are built sturdy, forcing plastic to break open can result in broken hinges, creating a bigger problem than you started with. I changed them out today and the instructions were fair but not as good as they should be. Latest Stories. The Len's are completed broken up and shredded. Anyone know of any problems with that fix? Small leaves or twigs should not produce many false triggers based on how the camera operates. The lens, the PIR sensor, and the light meter are the most fragile aspects of your camera. If you look closer, you’ll see that the “dome” is build out of little segments – each being a small plastic Fresnel Lens. Infrared Optics Polymer Optics Ltd is a leading supplier of Passive Infra-Red (PIR) lenses and PIR lens design services to the security and lighting control industries. They're different at different wavelengths, but you still need a way for the radiation to pass through the wall of the box. A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. PIR Lens “Dome” As you can see in the pictures above, the PIR has some funny dome-like bubble, which is a collection of lenses covering the sensor. I went ahead and made a drawing of the PIR lens showing the top and bottom better versus the wording in the instructions. The camera still functions, but I need to replace to PIR lens to prevent the potential for moisture to get into the camera. Thanks a whole lot. You want to make sure that you are not just … Christmas Countdown Day 24 – Thomson Bar & Stem; PIR sensors work best when there is a good difference in temperature between the animal and the outside temperature. That passes through a … Dome size PIR Sensor lens cover is primarily used to transmit infrared light for motion sensor and motion detector use. PIR sensors detect general movement, but do not give information on who or what moved. Issue 134. I got the PIR lenses yesterday (Saturday). What can I use to replace the lens… Seems to be working fine in my other camera. I have 2 Pro 2 cameras (That still work) and both have the PIR lens destroyed by a woodpecker. Feel free to cut and paste them into your instructions. While our lenses are mostly used for security and lighting applications they have numerous other area sensing applications for products such as fan control, door activation, temperature measurement and Fixed the broken LED glass with a quick Plexiglass cut. Passive Infrared PIR Fresnel lens is made of … I have emailed Moultrie numerous times, but have gotten no responce. This video looks at the problems and success I had using a eBay sourced low cost Chinese made Exterior Lighting Motion Sensor \$\endgroup\$ – tomnexus Aug 21 '15 at 9:26 \$\begingroup\$ How about radar? 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