Re: Cabling, cabling...

["graham_howe" <graham@xxxxxxx>]

> Now, I would like to know what kind of cables I need to put. Here 
is what I
> want to have installed in each room one day:
> 
> - IR transmiter
> - IR receiver
> - Speakers
> - Microphone
> - PIR sensor (for occupancy detection)
> - temperature sensor
> - door contact
> - Please suggest what else I can put here...
> 
> All this stuff can be installed in each room above the doors, 
making it
> easier to put the cables through.
> 
> This is what I think so far:
> 
> - IR transmiter - Cat5 (?)
> - IR receiver - Cat 5 (?)
> - Speakers - speaker cable (amp must be in a node 0 then - these 
speakers
> are for announcments only)
> - Microphone - (?) - for speech recognition
> - PIR sensor - for occupancy detection or alarm (?)
> - temperature sensor - I think Dallas 1 wire system is the best way
forward,
> but I don't know what type of cable I need here
> - door contact - (?)
> 

I have an IR receiver mounted inside a PIR sensor and sharing a 
single CAT5 cable. It was really easy to do and works well. I also 
have a PIR sensor and door contact sharing a single CAT5 cable, again 
there are no problems.

My approach was to put CAT5 terminated at sockets throughout the 
house and then plug anything and everything in to them. So currently 
I have LAN, home phone, business phone, PIR sensors, door contacts, 
CCTV cameras, comfort keypads, IR receivers/emitters, KAT5 
receivers/transmitters all plugged in to the same structured wiring 
and all easily moved around the house. Back at node zero everything 
terminates in a pair of 48 port patch pannels so again I can move 
things around very easily.

Looking at you list I would probably go for 4 x CAT5, 1 x speaker 
wire, 1 x coax (I think that is what microphones use) at each doorway 
and that should work for everything mentionned. Incidentally, CCTV 
and Comfort Keypads are supposed to require shielded cable but both 
work fine for me with normal CAT5e.

Regards

Graham

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