AC / DC Watchdog Big Dog Backup Sump Pump

Watchdog Big Dog backup emergency and main sump pump Big Dog pumps 2200 GPH @ 10-ft lift to empty the sump pit in seconds. White pump (3500 GPH @ 0-ft lift). IN STOCK AND SHIPS SAME DAY. This unique AC / DC units works as the main sump pump when there is household power and if not switches over to emergency battery backup power to run the sump pump. Computer-operated controller tests the battery and runs the sump pump once per week to detect any maintenance requirements or problems. Indicator lights let you know exactly how many hours of pumping power remain in the battery. Powerful 20 amp charger recharges the battery quickly and shuts off completely to prolong the life of the battery. User-friendly controller sounds an alarm, illuminates a warning light, and describes what to do for easy maintenance. Runs without discharging the battery if the AC power is on. Monitors battery, power and pump activity and sounds an alarm when it detects the following situations: The battery fluid level is low (add water to the battery) The battery is discharged or defective (recharge or replace the battery) The AC power was interrupted (check the circuit breaker & connections) Pump failure (check backup pump) The pump was activated (check the main pump for failure). Button for optional silencing this feature. Battery is hooked up in reverse Can use 2 batteries in parellel. Offers longer run time. See the comparison sheet for more features. Requires the Basement Watchdog 7.5 Hour Standby Deep Cycle Battery model 30HDC140S or B12-90 to operate up to 7.5 hours continuously. (Sold Separately) Mfr's list price for pump is $585 Check valve and "Y" or "T" pipe fitting may be need.