True sine wave 120 Vac inverter with built-in transfer switch. Designed for recreational and commercial applications. The extended surge rating of the Freedom X makes it ideal to start difficult loads including fridge and microwave. The quick connect terminals at AC IN/OUT make installation a breeze. Ignition Control: Turn inverter on/off via a 12 VDC signal and to minimize battery drain by switching the inverter off when the ignition key is turned offWide 10-18 VDC Input Range: Ensures inverter operation on high voltage alternators found on many new vehicle chassisBuilt-in 30A AC Transfer Relay: Senses when outside AC Power is present and transfers the load from the inverter to the source of incoming powermode