Steca solar charge controller problem PR3030 - YouTube
Steca MPPT 1010 - 12/24V up to 100V Solar Charge Controller | MPPT 1010 - 12/24V up to 100V Solar Charge Controller | Europe Solar Shop | Europe-SolarShop.com
Steca Solarix 4040 Charge controller PWM 12 V, 24 V 40 A | Conrad.com