I noticed this: http://www.acurite.com/kbase/00275RM_Monitor.html has some extra sensors for leak detection and soil temperature. Interestingly the manual also indicates that it has a "Monitor ID" which looks to be similar to the unique identifiers on the 5N1 and Tower sensors.
Wonder if this uses the same protocol, so those of us sniffing the bridge traffic could pick up the data?
Wonder if this uses the same protocol, so those of us sniffing the bridge traffic could pick up the data?