Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Does the DVR have auxiliary channels or can the camera channels be used for contact alarms?
Document: This system works pretty much as advertised. When I received it, the cameras had a sticker stating that the cameras had been upgraded to a better quality. The cameras do work pretty well - there is a video on Youtube where a guy compares 4 different cameras and he is spot on with his evaluation. The DVR works pretty well, but considering I've never used anything else, I have nothing to compare it to. Good starter unit.
After talking with several neighbors who have security camera systems I decided to take the plunge and after much research I decided Zmodo had the most bang for the buck. I agree with with a fellow reviewer that the manual sucks, the brackets are cheap and I too am going to have to contact Zmodo to view the cameras on my smart phone and tablets.However, installation is a breeze.
The white cameras blend easily on our white house and garage. A few of the cables weren't long enough so I used 2-pair cat3 phone wire to splice and extend them, there's only 3 very thin wires inside these camera cables, so splice carefully and use solder to make good connections. No loss in quality whatsoever even on quite long runs. Took about two days to run wire and probably another hiding the wire, tucking everything in and patching up and caulking holes etc.
DVR works good, using only one new camera, the others I purchased separate, all appear to be working good. Very happy
Little fuzzy on the pic, and 2 of the cameras quit within a month when used outside. Decent enough for the price and for what we use it for.
This item is good. We use it as part of our paranormal investigations and it has decent night vision and is super clear during daylight hours if used then. It comes well packaged and is wicked easy to use, set up, and review. Good product for us at [...]
I then used my other 4 cameras to place on sidewalks where someone would have to walk to get into my home and those cameras help ALOT.. Their still not great but again, it was a $300 system.. I looked at digital systems and they are like $2,000.. This system isn't great but if I moved I buy the same exact one again..
The unit is pretty easy to set up,seems to be working well.The tech support is great, IF you can contact someone! the two people they have are not available &#34;24/7&#34; as the website suggests, they will eventually call you back,sometimes days later while you are driving, or nowhere near the device that needs attention.If the thing lasts I will buy more of them.
I installed all the cables in the attic and dvr setup was very simple but I am an electronics nerd so I didn't think it would be too hard. I used 6 of the 8 cams all around my house and out of the 8 cameras 1 was unusable! (blurred to death)  no big deal.... they are $12 cams give or take. So I got to the networking portion of this and it took 10 min.
we have to call tech support at Zmodo because it isn't working so we do. then the hard drive crashes and they still can't tell us why they tell us to contact the seller so we do and they are horrible you never talk to the same person and each person tells you something different and you spend 5 months back and forth and then 5 months later they say well sorry you are just stuck with a POS and tuff we just stole your money and refuse to do anything about it.
Answer: The software in the DVR has an alarm setting. I don't use it so I cannot say anything. I know as far as the aux channels, I have 8, but one of them I use for audio until my 12v power supply that I ordered comes in. I don't know what kind of alarm you got, or how its configured to work, so I can't tell you. However, besides the 8 channels for the cameras, there are 4 RCA female receptors for "audio in", I guess for mics, but I don't know about alarms. Hope this gives you some kind of idea. If it doesn't, call ZMODO support, and I'm sure they will help you. They have good support people there. So to give you 1 more clear picture as to what you got to work with in back of the dvr, you got all of these: 8 BNC ports for your cameras(female), 2 BNC ports, (video out, audio out" (female), 4 RCA ports, "Ain", now I don't know I got to look, if thats audio or aux, ok it is "audio in", I just checked (all female). 1 vga output for monitor or whatever video you use that has a 15-pin din connector ((female), 1 rj-45 jack (female), 2 USB ports, and your 12v power supply for the DVR. I hope this helps.