Do you need a separate one for each garage door?
2033936
The short answer is maybe. You do need one per garage door opener unit. I suppose, in theory, you could wire a single receiver in to multiple openers units, but then you're locked into (if there are two) them both opening and closing at the same time.
2033937
Interesting question: Theoretically it may be possible. Most single garage doors use this 'command box' to openand close a single garage door. One door being wired in 'series' it may be possible to wire the 'command box' attached to two garage doors (same kind of opener motor on both) by wiring one command box in 'parrallel' electricmode by 'splitting electric connects'. I would google people with two garage doors to discern if you haven't donethis already. If NOT possible for some reason....connect to one door and put 'wall button' for 2nd garage doorright inside the first door perhaps? Interesting question: Theoretically it may be possible. Most single garage doors use this 'command box' to openand close a single garage door. One door being wired in 'series' it may be possible to wire the 'command box' attached to two garage doors (same kind of opener motor on both) by wiring one command box in 'parrallel' electricmode by 'splitting electric connects'. I would google people with two garage doors to discern if you haven't donethis already. If NOT possible for some reason....connect to one door and put 'wall button' for 2nd garage doorright... » Read More Interesting question: Theoretically it may be possible. Most single garage doors use this 'command box' to openand close a single garage door. One door being wired in 'series' it may be possible to wire the 'command box' attached to two garage doors (same kind of opener motor on both) by wiring one command box in 'parrallel' electricmode by 'splitting electric connects'. I would google people with two garage doors to discern if you haven't donethis already. If NOT possible for some reason....connect to one door and put 'wall button' for 2nd garage doorright inside the first door perhaps? « Show Less
1183942
One only... Unless you have a MULTI ZONE outdoor unit, than you need one for each zone.
2095752
I Highly recommend this item, But, you will need two for a two car garage door !!
988369
Yes, when it is set up on the Chamberlain web site, all are done individually and you named them what light it is. "Ext Garage Lights" for example.
550944
I placed one code for each door. I do not know if you can place two on the same door.
958396
No. I needed only one when I ordered, but I bought two just in case they didn't match or lineup correctly. I was glad I did because they were not identical to the one I had and they did not lineup. The two I bought work just fine together.
2130974
Hi,Second button is for use on a second or separate garage door opener if you have.Kevin
1127587
I would call Chamberlain. I would think one internet gateway unit with separate wall controls for each door will allow you to use your current controllers in addition to controlling your garage via an app and the web. Each door would need to be registered under your login ID. I would double check with Chamberlain but I think this is correct.
1859168
If I remember correctly you need one separately, and if you need a square drain that also has to be bought separately. In the end it is very much worth it though if this is your first few projects, after you do 3 or 4 you could probably get by without it. But for beginners it's invaluable.
1674429
No, one set is all you'll need for one door. Not a silly question by the way.
2157045
You will need one kit per door. Each kit comes with two door location sensors, it....one that indicates the up position and one that indicates the down position.
955708
We have one on each end on our triple door as well as the double doors. They come one per package. It would take a Charles Atlas to lift the center door!
25076
I am not sure. I have only one opener for my 2 car garage. You may want to call or email Chamberlain directly regarding this question.
550945
I placed one code for each door.I do not know if you can place two on the same door.
734890
No. They're all of varying sizes so a few different sized couplers are needed.
254847
I only installed the one on the frame and left the one on the door in place and my door works fine. You should only need one strip.
2231998
Yes, you'll need one for each line. They are left on the line and as the line gets slack, you can tighten again.