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: can you speak to the people outside throw a speaker system in the device ?
Document: I like this item because it is easy to install, provides an excellent view of visitor, and looks good on my door from inside the home and outside. The product could be improved by providing a web page link with additional instructions . They should better describe how to remove the device if you want to make a change or take it off the door for some reason.
This is a great product and works perfectly. I only with it could be hooked to a home security camera system.
This works great! It's so nice to see out the door with out having to open it.Easy to install and is perfect for older people who live alone
This digital peephole is awsome people,so go ahead and get it,you won't regret...The picture at night is very clear ,will get another one very soon
I purchase this item for a friend, who wanted to see what is happening outside his apartment, he is very excited and love it very much, it is doing a fantastic job, easily installed and setup....
Its pretty big inside the door. Looks sharp on door exterior, despite being plastic body. Great for people too short to see through regular peephole. Interesting to see pictures of everyone who rings the doorbell while you are away. Would be better if it had some kind of motion sensor to take pics when the doorbell isn't pressed.
This is very misleading. The 170 degrees represents the angle in which you can view the screen from inside. The lens itself only shows you a 60 degree view of the outside. In my case, this means someone could easily stand to the side of my door and not be seen on the display.
Very well made device. Works exactly as advertised. Easy to install. Very clear 170 degree view.I've seen similar devices for 3 times the price.
This was simple to install as a replacement to an existing peep hole. It provides a decent picture and good field of view. The batteries it came with died quick. The replacement batteries have lasted longer than the ones it came with at this point. I am hoping it was just cheap batteries it came with and not a battery draining system.
My son has the same model and you can see all the way across the street to his neighbors houses, that is why I think it is because my entry is tunnel like and his is open. The night vision is great, I can see all the way out to the street. All in all I think this is a handy device to have around.
Answer: yes