[MattHelm21]

X2. I have the Magnum auto start. It may be the only one on the market right now that is compatible with Onan. I originally wanted the Onan auto start kit but it was discontinued with plans to develope a system controlled from a smartphone app. I don’t know if this was ever brought to the market

The magnum can start on low voltage, preconfigured inside temperature, and you can schedule quite time so it will top off your batteries beforehand.