Chamberlain Power Drive Security-Plus PD210D

this model was a bear from start to finish. i had before put up 3 different sears openers and had little problems. this unit, hmmmm ... how many times did i feel like tossing it out. there are the safety… sensors, which must be adjusted PERFECTLY. and i fear the future with them. they are sooooo sensitive, the little bit they are off, no door will work. and i see no way to bypass them in the event of either of them failing. then the book several tiems has the caveat, the weather will adversely effect the opener working. i have NEVER EVER had any door fail to sork due to weather...ever! the booklet is sort of ok, but in many spots very hard to discern what they mean, and the picture to help was useless. overall i wish i had used the local door company for them to install a belt drive unit. yes at 300, but a better unit and NO hassle. this unit at 129 is decent in price, but not in hassle...what is that worth, not to mention the darn thing working over time, the sensors working over time and their out, the weather.

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I've owned this product for almost two years now, and its performed well. My application was unique, having very little space between the ceiling and door (5"). Also the door spring sits over top of the… door where you are supposed to mount the rail. I had to modify a bracket and mount the rail and motor very close to the ceiling. I should also mention that my door is fairly heavy 8X16 steel insulated. The only problem I had was the chain would "jump" over top of the piece that slides on the rail causing it to grind and bind up. This may have been due to my specific application, but it looks more like a design problem with the rubber piece on the slide. I added a piece of metal to the slide that prevents this and have had no troubles since. I've heard noisier openers, but I would not label this one as "quiet" either.

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