I'm looking at the temperature guards. If you can get a phone line dropped in, then it's only about $300 and you don't have the monthly fee you have with the cell service one so not bad. I'm calling ADT tomorrow to discuss other options since the fire alarm wouldn't ever work right. I think they have temperature monitors too and I'd rather it be through them if I can get something that won't false alarm since it will contact the fire department directly.