Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: does it come with dvd
Document: this is a very good product BUT to do the installation you have to remove the printed circuit board. the screw terminals for connecting the wires are not accessable otherwise . this is a problem that needs corection!! !
the product was poorly designed. I live in Trinidad and i purchased this product, by the time i had it shiped and installed, the 30 day warranty was up. As a result i am out of money (341.00). i am a very distatisfied customer.
okay this product works great.. but of course is made in china.. plastic housing, plastic gears, but.. u get what u paid.. but....for the ones who post above.. u should check the limits switches.. some times the cable split.. the arms are so easy to dismantle and replace any part.. ! im a contractor soo.. it is very easy for me to install this lockmaster.. and they are very reliable!
installed fast and simple...programmed quite simple...good product...did break remote but that was my fault...good addition to property.. thank you all
because I got stocked with a teribble item.I'm trying over and over to get the part that I need( I don't need it for free) but you guys keep telling me all different stories.Verry simple : I need the electric box of this unit.I'm weling to pay for if I have to. I need it verry soon,because I'm looked out from my gate.
You get what you pay for. Absolutely garbage, limit switches do not stop the gate no matter what. Stay away from this crap
This product is indescribably bad. There are hundreds of people on the internet complaining about it, dont buy one. I wasted so much time trying to get this product to work correctly without any success. Im very skilled with tools and this thing drove me nuts. I later found out that thier circuit boards were defective and in general itis a worthless product. \Look online and read the complaints, they were selling these on e bay and a lot of people got cheated. Its awful.
This product did not work out of the box and now I can not even return it or warranty the faulty part. I am very disapointed with this product as well as Amazon! Buyer beware!
The gate installs easy with few problems,it programs easily and the manual is well done.One major problem I'm having is after I installed it it was working fine until I tried to adjust the limit reed switches because of a little over travel in both directions.Both motors started to go in full extension of the arm. I can not make the motors go in reverse. I tried to manually screw in the arms half way but they only go out in one direction.
Now they have totally stopped working and I have disconnected them. I wasted over $500 between the cost of the system, buying my own hardware not to mention the huge frustration and time. Stay away from Lockmaster openers.
Answer: no