Source(s): 10 yrs home repair. And the ballast in most CFL light bulbs can't deal with that. Have an assistant hold the ladder steady. An outdoor motion detector light can save electricity and scare off intruders. Next, place the sensor in a position away from objects like shrubs and trees. The exceptions to this are the dimmable CFL bulbs. Climb the ladder to reach the light, taking care not to set the sensor off. your light will go off when there movement in front if it, that why they call it a motion detector light. The heat from the devices can trigger your motion detector and cause your light to stay on as it is perceiving a heat signature. If your motion light is on at all times, there’s a good chance that the sensitivity setting is set too high. The outdoor ones have been there for over a year, and one is directly in the weather with no overhead protection. DICK R. Lv 5. Often, the wind blowing through leaves and branches can cause the motion sensor to detect motion, causing the light to stay on. Using your Motion Sensitivity Slider. playing off of ripples on water. Unintentional Objects Moving in the Background - False motion detection can occur with anything in the area that may be in motion that has a different temperature than the surrounding temperature. The controls on major brands available allow you to calibrate the motion sensors in terms of sensitivity, the area monitored and how long a triggered light stays on. Sometimes those changes can be caused by light being "blinked" on and off by the wind moving leaves or tree branches, etc back and forth across a warm source. In difficult environments, strong wind blowing leaves on trees or similar objects can trigger the motion … If you do not have any additional outdoor lighting, motion lights can be an inconvenience. 1. This means your light could be triggering by everything from tiny bugs, to cars in the distance, to heavy dust! 180° White Motion Activated Outdoor Integrated LED Twin Head Flood Light This LED motion flood light provides 1200 This LED motion flood light provides 1200 Lumens of light output for increased safety, security and peace of mind. if you didn,t went to come on all the time put a swicth on the line. Blowing trees and bushes don't set them off, but a person, deer or coyote will. My outdoors don't set off the alarm, they just chime inside when they trip so I can take a look on the cams or out the window. Amico 3 Head LED Security Lights Motion Outdoor Motion Sensor Light Outdoor 40W 3500 Lumens 5000k Waterproof IP65 ETL Motion Sensor Flood Light Exterior Security Light led 4.5 out of 5 stars 4,230 $36.99 $ 36 . Place the lantern on the top step of the ladder to light the switch area of the motion light. In fact, trying to control an ordinary CFL light bulb with a photocell can cause the bulb to fail. To stop unwanted “trips,” you have to limit the “detection zone,” the area where the sensor can see moving objects. It won't go to full power until it's fully dark outside. Place a ladder on a firm surface directly below the outdoor motion light you wish to adjust to remain on. Check it out, and turn it down a bit. 1 0. If you have one of those that are outdoor rated, you can … You can adjust outdoor lights -- whether they are security floodlights or a decorative coach lamp -- to get just the results you want from the motion detection feature. You can use the motion sensitivity slider to reduce these kinds of motion … 1 decade ago. 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