Check the listing for details. NEW Powermax PMTS-30 Automatic Transfer Switch 30 Amp RV Generator to Shoreline. Condition: New. Listed at 75.00 USD. Powermax 30 Amp Automatic Transfer Switch The PMTS automatic transfer switches are designed for use in RV’s with 30 or 50 Amp AC service. When plugged into the shore power it will automatically provide AC power to all AC appliances. To operate your appliances from an onboard generator or alternative Power source simply start them and the PMTS-30 or PMTS 50A will automatically transfer the electrical power to AC appliances. They also feature a time delay of 20-30 seconds to allows the generator voltage to stabilize. Features:PMTS will Automatic Transfer between 2 – 110Vac inputs to a single 110Vac outputIdeal for uses with RV, Off-Grid, and with Back-up Power solutionsAvailable in 30 Amp & 50 Amp sizes12 Volt DC RelayOutside dimensions 8 x 8 x 3.2 Year Warranty