The Westinghouse WATS200 Automatic Transfer Switch gives homeowners a smarter path to automatic backup power for about half the cost of traditional permanent standby systems by reducing equipment, site prep and installation costs. Instead of a manual portable generator setup or a high-cost traditional home standby generator, the WATS200 is an efficient new way to get automatic standby home backup using a compatible Westinghouse Smart Switch Ready generator. This 200 amp transfer switch communicates with both your generator and your utility power to keep your home ready for an outage. It automatically starts your generator and transfers power to your home outlets. When utility power returns, it automatically switches back and shuts the generator down. It also keeps your generator's battery charged, so it's always ready to power up automatically. The WATS200 offers serious home backup generator capability with service entrance rated design, a NEMA 3R indoor/outdoor enclosure, ETL listing under UL1008 and integrated A/C load management. Many Westinghouse generators already have a smart switch outlet and are ready to upgrade to automatic standby. Tri fuel generators can run on natural gas, so with an added hookup on your home supply line, you can eliminate refueling. For maximum home standby power, the WGen20000TFc generator has a terminal block for a hardwired connection to the ATS, so full power output can be used. Comes with a 5 year limited warranty.