Posted by a reviewer on Amazon

I like this product easy to installbefore you return this product swith your wire first i was having a problem at first cause the safety light was not on when i re wire it i follow white to white whiteblack to whiteblack still didnt work i was ready to return it but i read there instruction here to invert the wire and i did that boom it works so now happy wife happy life

Posted by a reviewer on Amazon

I can imagine some users would install these per instructions and conclude they dont work

Posted by a reviewer on Amazon

The installation instructions should be corrected

Posted by a reviewer on Amazon

Would not have known to do that if not for several reviews that mentioned it

Posted by a reviewer on Amazon

It was the only fix for not opening the door on sunny days

Posted by a reviewer on Amazon

Initially when we tested the parts at the opener the lights didnt seem to work but when we switched which eye was plugged in to the sending side we realized we just had them backwards

Posted by a reviewer on Amazon

There is a sending eye and a receiving eye and they must be plugged in correctly to work

Posted by a reviewer on Amazon

My old sensors wouldnt work anymore when the sun would shine on one of them