Wayne ESP15-57609 Emergency Battery Pump Amply automatic basement protection in the upshot of a power failure. This arrangement operates on a 12V automotive battery and is self charging. Includes 12V pump, mercury switch, battery case, hold panel and battery charger. Pumps up to 25 GPM at 5′ vertic.The Wayne back-up pump arrived make to assemble. It was easy to do and conveyed no time at all. The only special regions postulated were a match of little 1.5″ pieces to connect to the primary pump. I plugged it wholly together and it works Wayne ESP15-57609 Pump similar a “charm”.

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