Appreciation post: a 900MHz wireless takeover kit cut my attic time from 5 hours to 90 minutes on a 3 story in Boise | Alarm System Installers - Thought Shares
What kind of signal loss are you getting between floors? I ran mine through a 3 story last summer and had to add a repeater on the middle floor or the basement unit kept dropping. Worth checking before you trust it on a full day's work.