The Elkhart Supply Automatic Power Transfer Switch is intended for use as an electrical transfer switch to automatically switch multiple sources from one to another. Specifications•Type: Automatic•Function: Transfer Power Between Shore And RV Generator•Voltage: 120 Volt AC•Ampere Rating: 50 Amp•Length (IN):8-1/2 Inch•Width (IN):4-1/2 Inch•Height (IN):8-1/2 Inch•Color: Silver Transfers Both Hot & Neutral Legs Simultaneously Economical & Reliable Time Delay Switches Automatically From Shoreline To Generator Power Capable Of Monitoring For Low Generator Voltage | Elkhart Supply Automatic Power Transfer Switch, 50 Amp