Very Light use in travel van, moved back to USA , used on EU trip .  One of the best set up inverters on the market, with incredible ability to switch immediately to shore power when plugged in. 

SMART-IN PURE with IVT function is a line of inverters with an integrated system of priority (Priority Switch type). This special IVT function, through the two input and output 230V sockets, allows the management of the voltage that comes out from the inverter connected to the battery and to the external mains

When the electronic network is available is connected to the external grid, it will have the priority in order to preserve the battery; otherwise, when the main is disconnected, the inverter use the battery to supply the 230V.

Distinctive Features:

• By-pass integrated function
• Relay time change from inverter 230 VAC to external main= 20 ms
• Relay time change from 230 VAC external main to inverter = 100 ms

What is the IVT function?

More frequently, the inverter is the only solution for powering loads in the vehicle, but its dimensions and power (above 1000W) make it impractical to move as required. The IVT function is a priority system that allows the inverter to automatically power itself from the 230V mains, when available, and return to using the battery when necessary.

This function makes it possible to safely connect the inverter output to the vehicle’s electrical circuit, so as to always have all the sockets powered, leaving the inverter conveniently installed near the leisure battery