The float is adjustable and temp compensated, at least for the model I got. I have a simple 12v setup. The days it worked the float was 13.8, which is about right since it's been warm lately.
I got it mainly for the price ($127 incl shipping). The HV version (100v max input) was only $10 more than the 50v version. I wouldn't buy the 50v version. It makes no sense. The Voc on even my cheap HF panels is 23.6. Two in series on a cold day would probably go over the limit.
The Outback C60 ($175) is not an MPPT, the Morningstar 15MPPT is about twice as much money as the BZ and rated 50 watts less input. If the BZ works, it's worth what I paid for it, but I couldn't justify $250 now for the small setup I have. The Outback MPPT's are $500 and up. If money was no object, I would definitely have bought an Outback MPPT.
The Blue Sky 2512ix with a temp probe is about double the BZ price, but comparable in features. The circuit boards look pretty much alike, too.
Any controller rated 250 watts would greatly simplify my wiring, which was the main reason for getting it. I have 5 separate HF PDUs now. Any decent charge controller rated 250 watts would cost almost as much as the BZ, so the mppt part is just a nice extra.
