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: what color is this unit and will it work with lift master security +
Document: The Chamberlain 940EV works wonderfully, was easy to install. The remote controls my Lift Master Garage Door Operator with easy to remember pin code input. Installation and set up was a breeze.I've also installed the Chamberlain Laser Park Assist in my garage. Both products work like a charm. No more crushed golf clubs or garbage pails.
It didn't take long to install. I have a red button behind my Lift-Master garage door light & it worked with this. It also works with other colors.
I bought this opener because:1. it is compatible with all Chamberlain openers, regardless of the &#34;learn&#34; button color.2. it has the flip open cover rather than the sliding cover that many reviewers experienced problems with3. it allows me to program a temporary code in addition to my master code4. it has an &#34;enter&#34; button to press after entering the code.
This keyless entry was shipped quickly and worked perfectly. I had it installed and working within 10 minutes. It comes with a 9V battery, but it's a very cheap no-name brand so I don't expect it to last very long. My only complaint was the color. The product image shows a white unit, but mine was beige. If I were picky, I'd send it back to get the color I really wanted.
The house we purchased did not have a keyless entry for the garage. After researching our operator I found that the Chamberlain 940EV would work with our Chamberlain Security+ garage door opener (manufactured 2005, red button). Amazon had the lowest price on this item (about $8-10 less than B&M; stores).This purchase was a no-brainer. All required hardware and batteries were included. The instructions were clear and concise.
Drilled 2 pilot holes and mounted onto my door frame.The only slight disappointment was that the one-button close features does not work with my Chamberlain Security+ garage operator model. This functionality only works with operators manufactured in 2006 (or later). This is definitely not a deal-breaker.Now we have keyless entry on the garage and we can leave a key hidden in the safety of our garage in case we lock ourselves out. This allows us access into the garage to use the hidden house key.
Chamberlain 940EV Garage Keyless Entry Remote was great. USE the short instructions on the unit itself, NOT the enclosed instructions. Doing the LEARN procedures on the provided sheet did not work properly, causing my car/handheld remotes to lose their connection.
I was very pleased at how easy this was to install. By following the abbreviated instructions right on the unit, I had no trouble getting it to work the first time. My only complaint is that we do have to push the &#34;enter&#34; button twice a lot of times. It's not a big deal, and this is certainly a good product for the price.
Our previous wireless keypad for the garage door opener was horrible. The buttons were slightly recessed and it took two or three attempts just to get the code to work. I searched for a model that had buttons that looked like the protruded from the case more and took a chance on this unit. All I can say is WOW. Very easy to setup and very easy to press the code one time and have it work.
one time program no issues since, took on first try. Worked with our older Chamberlain security + plus # 9902 with orange/red program button
Answer: yes