Hi there,
We have several remote communication sites with Multiplus inverter chargers providing backup power and a Venus GX device to remotely monitor the sites. We can use the Venus GX to tell us when the grid is lost and we can visit the site with a generator to provide mains power. What we are looking for is a similar alarm or notification from the Venus GX that the mains power has been restored. Can this be done with a standard Victron accessory or can we connect some third party device that can send us a signal via the Venus GX?