The Eaton STS 1400 (formerly marketed under the Eaton Office Protection Systems brand and now part of the Pulsar series) is an affordable solution for customers willing to add power redundancy to small networking equipment like switches and routers. This source transfer switch will power them from 2 different sources (typically the mains power and a UPS, or 2 UPSs). Should one power source fail, the alternate one will switch over with no interruption to the connected equipment. Eaton STS can be connected to up to 6 devices at the same time while saving the cost of expensive redundant power supplies.