This is 36V-48V controller box. It suit for Tuhorse 3"210w, 3"500w and 4"500w solar pumps.
Also compatible with most of 36-48V/DC solar pumps.
Input maximum open circuit voltage (Voc): 100V/DC
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absolutely love the product! Yet to install!!
I had one controller for 5 years and it gave up they a good controller