Genie Excelerator Close Limit Switch 33950S

Since I am reviewing four products today I will copy and paste this review into all four for easy cross reference for anyone else who goes through what I did. All four products came from Sanford and Son? Overhead Doors and fulfilled by Amazon. All four shipped quickly and arrived very fast. The three Genie parts were the same as the originals. I was replacing the Genie 34107R.S Screw Drive Carriage which had stripped and was no longer opening the door (http://www.amazon.com/gp/product/B000CST1L4/ref=cm_cr_ryp_prd_ttl_sol_14). I believe this stripped because the Limit Switches were installed in a shabby fashion on my garage door opener, the Genie Excelerator screw drive system, and the open limit switch (http://www.amazon.com/gp/product/B00286CVAQ/ref=cm_cr_ryp_prd_ttl_sol_3 ) stopped working (both switches, for some reason, the wires were run under the switch itself and srewed onto the rail, which caused them to strip over time because the wires were not tied down properly using the clips; versus just using the clips and tying the excess wire in a loop with a twist tie at the end closest the power head assembly) . The Excelerator will shut off when enough force is exerted on the bumper mechanism, so even though the open limit switch stopped working the door would stop once it pushed hard enough against the bumper. However, this use of force to shut down the system over time wore down the screw drive carriage (took a little over a month for me). Since the close door limit switch (http://www.amazon.com/gp/product/B00283OBXY/ref=cm_cr_ryp_prd_ttl_sol_8) had also been installed improperly and also seemed like it was having problems (sometimes it seemed to work, sometimes it seemed force was taking over) I decided to replace the whole setup. So, two new limit switches, a new screw drive carriage, and a tube of the grease folks seemed to recommend over the higher priced Genie brand 3 pack (http://www.amazon.com/gp/product/B000FJ07W2/ref=cm_cr_ryp_prd_ttl_sol_7) and I'm back in business. I am no expert, believe me, but the install of all three was a very easy one person job. Simply release the carriage from the Curved Door Arm, unscrew the one screw from the Head Bracket, and lift the rail high enough to slip off the old drive carriage. Have the new carriage ready to go and slip that right on. Lower the rail back on the head bracket and screw it back in place. Reconnect to the Curved Door Arm. The limit switches unscrew and screw easily back on. The wire clips just pop off very easily and are easy to reuse. The new limit switches do not come with the screws that hold them in place, so make sure to keep your existing screws because you will need to reuse them. I used the clips to hold down excess limit switch wire until I reached the Power Head Assembly, and then I just rolled up the rest of the excess, tied it up with a twist tie, and laid that on top of the Power Head Assembly. The greasing directions that Genie provides with their grease (available here from the Homedepot site [...]a381-1a02db9fe92b.pdf?cm_mmc=seo|altruik|100665696) has you wipe down the rail before you put the new grease, and then wiping off excess once you grease the screw drive shaft. Not sure how necessary that is, but I did it, and then found I needed to do a few runs of grease along the rail to lube it up right. Maybe they meant wipe off mess that does not go on the drive shaft or rail...because you need the grease on those. One final note, once I reassembled eveything I realized the rail was not straight because the carriage was moving on an angle. It turns out that the Rail Strap had bent (this thing is heavy metal) presumably because of force causing the door to stop closing instead of the close limit switch. I had to go back and take that off and bend it by hand to straighten it out. Two months later and all is working...although I need to hire somebody to come out and balance my door because I realized when I took everything apart that the door came down very hard when not connected to the system and it should almost be balanced and not go down at all. Since balancing a door could be a bit dangerous I am choosing not to try that.

Not exactly as shown but I was able to make it work. Right component but wrong bracket.

I works but keep in mind that if you have an older model it may not be a perfect fit (metal bracket). We kept the old broken metal bracket (the wire broke off the sensor) and just popped the old sensor off the old bracket and then popped the new sensor off the new bracket and glued the new sensor on the old bracket. Works perfectly!This is only if the bracket doesn't match.

This parte are hard to find now a days. But this one was a perfect fit for my garage door, easy to install and worked like a charm with the old magnet in he arm latch. A great buy!

The bracket on the version sent was for a narrow rail and mine is a wider rail. Not a problem as I kept the old one and was able to separate the sensor and re-attach it to my old one. Otherwise works like a charm

Direct replacement for Genie 33969b door closed sensor ( in fact part received was marked 33969b). Does NOT come with screw so remember to remove screw from old sensor before you throw it out. Easy 10 min fix.

The sensor itself was correct for our door opener model, but the metal attachment bracket was the wrong style and did not fit. I was able to remove the sensor from the new bracket and attach it to the existing bracket on the door opener and it works properly.

Like most, I was frustrated with my door going part of the way down and back up again. Most of the time the door did not go down at all and I had to manually lower it every time. I was already looking a buying a new garage door opener. I took a $10 chance on this limit switch. I have a Genie Excelerator screw drive and the product description matched. It's only been a couple of weeks but my door is back to normal. No issues! Sometimes things work out like they are supposed to. (I found out power sources is one major causes of ruining these limit switches. Recent storms and power surges must have not been a coincidence of the failure of my original limit switch.)

I would give it 5 stars but i had to reuse old bracket for my chain glide, removed sensor with a heat gun and used two sided tape to stick on my old bracket. works fine.

Appears to be oem parts. Works great.

Works great had to remove this switch from the included bracket and install the switch on my old bracket as I planned.

Working just like the original one.

The right replacement for door close sensor for my 1/4 hp garage door.