Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: Does the wall mounted receiver have a learning purple button on it? I want to add 2 more auto remotes.
Document: It is a relatively quiet opener with most of the noise I hear coming from the actual door. The fine tuning of the openers movement to allow proper height of the door up and down were simple and quick. The safety sensors were easily aligned using the provided clips. I did not test the maximum distance of the remotes but was able to activate the opener from the opposite side of my 1/2 acre lot which is all I really need.
Opener works great, it is much quieter than the other 2 openers that I have. I would reccomend this garage door opener.
It is everything I need for a garage opener. No noisy, smooth operation, remotes works great. Also can act as a garage light. Heavy Duty construction. Instructions very detailed.
The opener is a good quality. It will not support cfl lighting but a bulb is okay with me. The door button is big and has a separate light switch. I like this opener better than the screw drive I normally put in my rentals,it's a higher quality and it's not as loud.
I have a 2 car garage. One of my units decided to die on me so I replaced it with this one. It is considerably more well built than the unit it replaced but is not anywhere near as quiet as the original (Hormann I think was the brand) Anyway I'm pleased with the quality so far.
The door opener works fine and was not all that difficult to install. The problem was that the two remotes were missing from the box. At first I wasn't too worried I figured I would call the help line the next day and they would send them along. Wishful thinking...
Shipping was quick and installation went very smoothly. Chamberlain makes a lot of openers and makes an excellent unit. The remotes were already programed to the opener and the instructions were clear. I had similar unit for 16 years before this one. This one seemed better designed than the old one. One weak point on these units is they use plastic (nylon)  internal gears that need to be lubricated from time to time or they strip out..
I replaced a Genie screw drive opener with this Chamberlain opener. The chamberlain is actually quieter. I have always purchased Chamberlain openers and have always had great luck. The ease of installation and the instructions are great. I opted for the MYQ Smart Phone option for this one and it was a breeze to add on. Super simple set-up and very user friendly.
The Chamberlain Opener installed easily and needed only minor adjustment to set the proper opening and closing positions. The operation is smooth and consistent.The remotes work well and have good range. This opener seems very substantial and I'm very pleased with this purchase.
That may be a part of why this new one still flexes considerably-in spite of the square cross section of the new rail (vs "t" section) and is actually louder in operation than the old one had been.Also, perhaps one of the MOST important parts,  the emergency release lever (which is the part actually being pulled on by the hand rope and handle) is one of only 2 parts of the entire assembly of rail/guide/bracketry/etc.
Answer: yes