ESP15 is a 12 Volt battery back-up sump system with an audible alarm and LED indactor light to inform homeowner when the back-up system has been activated and the charge status of the battery.
From the Manufacturer
The Wayne reinforced thermoplastic battery backup system pumps up to 1750-gallons per hour. The Reed float switch design will operate the pump with minimal travel area to fit in smaller pits reducing float switch hang ups. The professional grade back-up system keeps the battery properly charged. Comes equipped with an alarm which alerts the homeowner when the back-up system is active. The ESP15 backup sump pump system is designed for easy installation without any major plumbing changes.