The other screw-in sensors available do not have the proper electronic design to switch a CFL lamp. Our product is less expensive than the competition as well is lasts longer.
We have installed a 128-bit SSL encryption certificate and any orders on elights.com will have their shipping adjusted back down to $7.95. Thanks for pointing that out... we just assumed our web programmers would have made it secure. Bad assumtion! ;)
If this product were LED based, it would cost $50-$100 to put out the same number of lumens. The costs of the high efficiency LED's are still very high and the optics and heat sinking required make the overall design very expensive.
Our product has a timer that can be changed to up 5 minutes of ontime. As long as the sensor detects motion it will reset the timer, so the product will actually be on somewhat longer than a CFL which is controlled by a regular switch and will not have a reduced lifetime. If you don't believe me, there is a 5 year warranty included. ;)
The product uses a passive infrared sensor, so it doesn't work very well under a lamp shade. Depends on the ceiling fixture... if there is a glass lens it will not work. If it's an open fixture with the socket facing down it should work well.
-elights
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