Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Will this work if aimed through window glass? I need a creepy-neighbor detector. (He hangs around my window.)
Document: Cheap flimsy plastic and crooked mounting bracketry. Siren alarm does NOT work as specified at 120Db, more like 40 Db or less.Siren works sometimes, most times it does not. Usually it goes squeak once for 1 second and no more sound. However, the light always works...big deal. I can turn on my light bulb if I need a light, or a flashlight.Look for something quality, produced in the US, not this cheap chink junk.
I think this is a pretty darn good little package, and if I had need for more I would not hesitate in another purchase. Also, the price is highly reasonable. There is one problem:  alas, the thing is made in China! !
PIR cannot pass through glass panel. ( I did not know that ...)After installation, the item is not sturdy enough. ( feels unstable)
I went through buying all other security stuff, it was such a waste. I think this is exactly what people need! In and out remote control, Very simple! when you go outside, press the  out alarm and press the disarm when you go in. Some other unit i spent for $100 dollars and it is very complicated. what u don't need is  waking up the  neighbors with false alarm. It is also  easy to set up.
This alarm  prevent to steal to my house. The window was opened,Nevertheless He do not steal any money. The thief  was scared And it went away.
It is a little flimsier, cheaper looking than I expected. But it does work well. I like the remote controle feature
I rate this product a 2 instead of a 1 because at least there has never been a false alarm and they are easy to setup and move around. If you have a webcam with a good mic, you can maybe monitor it yourself that way. In this noise-filled world we live in, you are better off going with a remotely monitored alarm service. I immediately signed up with SimpliSafe because they only charge $14.99 a month for alarm monitoring.
After much research, this seemed like the perfect alarm/chime. Unfortunately, the strobe light and alarm do not work. The return policy is poor, so I am left with an expensive chime.
The unit works great. However, I am glad I purchased an extra remote as the one in the package does not work. The metal clip that holds the battery in place and provides charge was broken.
Only disappointed on distance to arm and  only one remote control included, other than that it's okay. You also need to buy one 9v battery and 4 AA but there is also DC plug power if you don't want to generate with batteries.
Answer: yes