57C492, Reliance, Battery Back-up (803623-R)
UNS = Unused Surplus REF = Refurbished
In addition to supplying this Reliance 57C492 Battery Back-up (803623-R), we have an Exchange Program for all our In-Stock, ready-to-ship products. Buy a 57C492 and buy with confidence! We offer a one (1) year warranty on all in-stock items.