This 40A Input 12/24V Solar MPPT Charger allows you to get more power from your existing panels, or alternatively...

40A 5 PIn Change Over Relay Common Relay 6.35mm Tags Panel mount Weather proof Automotive, etc. 12V 30A

40A 5 PIn Change Over Relay 30A SPDT ¼" “Bosch” Type Popular standard Single Pole Double throw 12V Coil 150mA 6.35mm...