Zoeller 508-0006 Aquanot 508 ProPak53 Preassembled Sump Pump System with Battery Back-Up Includes: Model 53 115-volt pump, Model 508 Aqua not, 115 Volt DC backup system with pump, check valve, float switch and piping Plumbed in 1-1/2" Such 40 PVC pipe Comes fully assembled and ready to install in your clear water sump Extra protection when the primary AC pump fails due to power outages Fully solid state automatic 10A charger/controller with alarm, light indicator and warning system