I need to monitor temperature in a closed area in another room.
Looking at something like a LM35DT/NOPB sensor : http://za.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=5359458
I am using existing cabling from my breadboard ( where my Mega is located ) - it is a 12 core cable used for domestic alarm systems.
What would be a safe maximum distance (if distance would be a factor) that the sensor could be away from the board and still get a reasonably accurate reading. Will be powering the sensor with 12VDC.