Also if its just std surfac door contacts how close / inline are they? Are they decent ones? maybe a picture of how they are fitted.
As 6 says as you can now see fault finding is needed as all you know is its one of the 3 rather than identifying 1 contact.
However if its stable with 2 and unstable with 3 id suggest its local to the 3rd.
I presume as 6 its double pole and you havnt hidden resistors somewhere
I just wouldn't, especially on a modern panel with more options. One zone per device, so you can diagnose any problems.
Your sketch seems alright assuming it's DP, time to get the multimeter out take everything apart and work out what's going on.
I have one zone which has 2 contacts on same zone in 2 sheds
I have altered one shed so it has two doors on now so I want 3 contacts
i did this and it worked for a couple of days then it kept saying the door was open but it’s not so I went back to 2 contacts for now
its Orisec panel
My current Hikvision cameras are quite old, they are 3MP turrets and the IR is pretty rubbish at night so I'm thinking of replacing them at some point. Are the newer Acusense Hikvision turrets any better?
I've managed a temporary fix with a cheap coupler and covered the ducting with a bigger piece, I've ordered a IP67 one which I'm hoping will fit in the bigger bit of ducting then I has going to jubilee clip either side, it's a bit of a cowboy job but hopefully it will work as the camera is now working. If it fails I was going to try using that haydon splitter from the camera working on the left of the second picture
Thats because Ubiquity makes lots of stuff you just need a txer/rxer that suits your needs. But if you have power at the camera end then yiu could just use a POE as others have suggested
Sorry the dodgy website in your link looked as if it was the type that would use a gmail address, you should have done the same when signing up here LOL
My email is a gmail not a business one, I set it up when I bought my cameras from them so I don't get marketing emails. If the splitters are tat I won't use them
Used to service a couple of WMC's around the Doncaster area that still had them, that'll have been in the early 00's
Probably be surprised what a nerd would pay for it on fleabay.