Victron Energy Bluesolar 10A MPPT 75/10 Solar Charge Controller Regulator 12V24V

BlueSolar maintains battery health, extending its life. We call this feature BatteryLife because it maintains the health, and extends the life of your battery. For remote installations – even when there is no internet connection or phone signal nearby – you may be able to monitor your MPPT by bluetooth-pairing with a LoRaWAN (long-range wide area network) device, available optionally.

eBay