Samlex STS-30 Automatic 30Amp Transfer SwitchSamlex STS 30 30 Amp Transfer Switch Whether youre using solar, batteries or a generator to power your AC devices on the road, chances are, youre going to want to use shore power when its available. Connect a Samlex Transfer Switch to your generator, or to your inverter battery bank and have your AC source switched automatically to shore power when you plug in. 2 Year Limited Warranty Features Automatically switches between 2 separate AC input