Xantrex Automatic Generator Start SW2012 SW3012 Requires SCPTurn your power system into a smart, hands off guardian with the Xantrex Automatic Generator Start SW2012 SW3012 (Requires SCP). This Xanbus enabled device automatically starts your generator to recharge depleted batteries or support heavy loads, delivering reliable power when you need it most. Designed for seamless integration with MS and RS Inverter Chargers, the AGS expands your power management capabilities without constant monitoring. Key