My storage tank is going to be in the cellar under the house. My boiler is 100ft away in an attached barn. Can anyone recommend a good--and by good I mean cheap & easy-- method of reading the tank temps & any other necessary house data at the boiler face while firing it? I have conduit going between the two spaces for Cat-5 & 5-wire thermostat cable already. What sort of info is useful in this situation? Is it necessary? I mainly want to be able to monitor the system's performance from an area where I pass-by regularly & not have to make regular detours into the cellar, where I rarely go, and hardly ever linger---it's a bit damp & musty.....