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I bought a motion detector light a few weeks ago. It worked great out of the box, but now its sensitivity has lowered a lot. You need to be really close to it for it to detect motion.

I tried cleaning dust, but it was not dirty.

Is there way to make it more sensitive? If I remove that white plastic that covers the light sensor, will the sensitivity improve?

I know it might make inside electronics dirty, but I don't care about that I can just clean sensor every week.

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What kind of motion sensor is this, an outdoor security light, or one for a light switch? Is there an adjustment for sensitivity? What's the ambient temperature, has that changed in the past few weeks, and is the sun hitting the sensor directly? –  BMitch Sep 29 '13 at 11:07
    
Do you have the instruction manual for this light? Typically these lights have some sensitivity adjustment available on them. If not, return it and buy one that does. –  Tom Swifty Sep 30 '13 at 17:17
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