My-PV SOLTHOR 0 - 3.6 kW, Interfaces: None, connection: DC. Efficient and self-sufficient heat generation. Infinitely variable control output from 0 - 3.6 kW. No inverter required. Loss-free conversion of all solar power into heat. Scalable from 1 - 10 photovoltaic modules. Also works in the event of a grid failure. No authorisation from the grid operator required.