Product review (3 stars): hmmm
so here is the deal... this item by itself kicks ass if you are hard wiring or are buying the dual stage and want to be able to heat and cool off the same controller. kickass options ....but here is why it didn't get 5 stars the directions for wiring suck... do yourself a favor as soon as you getit call the support number and ask for the wiring diagram or go here [...].... so much diagnostic time wasted because it was during the weekend. the directions leave out the critical step to jump the common wire.. why power needs to be jumped is beyond me and a serious design flaw. the holes and space to wire if you are wiring it with solid core conduit wire leaves a lot to be desired. if you want the 2 stage and don't mind being diy and get the above link this is a kickss product and deos what it says. fyi i don't know if the same issue applies to the low voltage models