The newly upgraded Basement Watchdog Big Combo builds upon decades of reliability and adds even more features to protect your home from flooding. This Big Combo is a pre-assembled energy efficient = HP Cast Iron, Cast Aluminum primary pump combined with the newly upgraded Basement Watchdog Special CONNECT Battery Backup Sump Pump System. With two pumps in your sump, you will know your basement is protected. Easy to install with little or no plumbing knowledge required! With its weekly self-test of the pump, compatibility with maintenance-free AGM batteries, improved charging and monitoring and a remote terminal for easy connection to a security system, auto dialer or other similar device, you can feel safe that everything is working. Plus, its new feature: a USB port that can connect to the Basement Watchdog WiFi module which allows you to receive text and email alert giving you the ultimate peace of mind while away from home.