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: If I am  inside will this go off if we are near it? We only want it to bark at people going to front door.
Document: 3) the detection range is short through our wood door- the intruder needs to be near the front door before the dogs bark. I would like to see a more sophisticated system, perhaps with separate components for the detector and speaker.
I'm still undecided about Rex. I have a carport and keep Rex inside the door to the carport. He tends to have false alarms and goes off when I turn on the microwave in the nearby kitchen. However I hope he's just as sensitive if there is movement in the carport. I recently had someone break into my car and I think with Rex there he would scare them off. Or at least wake me up to see what is going on outside.
I knew the Rex II alarm was going to work when the barking dogs fooled my cats (although they are getting used to it). My original dog bark ($14.95 decades ago) fools humans but not the cats, and does not pick up visitors approaching outside. The Rex II works exactly as advertised, with good sensitivity when pointing through the stucco wall to the front gate, and muted sensitivity on the interior-facing side until I get within four feet of it.
I took Rex out of the box, plugged &#34;him&#34; in, turned up the volume, placed him right up against my closed front door and I was set to go!Though I thought the barks sounded a bit fake, they caused the FedEx deliveryman to turn tail and head for the gate.
The initial growl on this thing is something to hear -- absolutely terrifying! He goes on after that snarl to a vicious bark. You wouldn't want someone to open the door and let this "dog" loose on you. I've actually caught myself yelling at him to make things more authentic ("Shut up, Frank! It's just the neighbors!") I added Beware Of The Dog signs to both sides of our fence.
This works well for us - we have it to the left of the front door, so it is hidden behind the door as we walk in and the door swings open to the left, and so it is to the side of the metal screen door that blocks the radar. Going through the wall of the house (2 x 4 construction and cedar siding) it picks up someone about 4 feet away as they walk up the steps, and the dogs start barking.
Actually the chime goes off a bit too much but I don't want to keep adjusting the sensitivity, so I'm trying to figure out what is setting it off when there are no people around. The price does seem a bit steep, but it's probably fair considering the excellent design and performance, and it is very easy to set up. (The other Rex may also be good but doesn't have as many features.) I highly recommend the Rex II, especially for single seniors.
Keep the volume to a level where it can just be heard. You want to plant a suggestion and let the imagination do the rest. And at peak volume I think the sound becomes a little unrealistic - not as "rich" as a real dog's bark.
The alarm does not work. The dog bark sounded so artifiicial and it is just a small mechanical bark which could could be easily  be missed.. I kept walking past the alarm but nothing happens - It is disgustingly disappointing- I want to return it. I WILL NEVER BUY ANOTHER DOG ALARM AGAIN
The rear-sensing is why I didn't give the unit five stars. Maybe it is a reflection off a surface in front of the unit, but for whatever reason (and I haven't figured it out) the "radar" seems to be a quarter to a half as sensitive to motion behind the unit as to motion in front of the unit. This may work for you, but it has resulted in being barked at by Rex needlessly and disturbingly when I walk around inside the house.
Answer: yes