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![Controller for solar systems - 1 - Vikiwat Controller for solar systems - 1](https://vikiwat.com/userfiles/productimages/96380/product_box_77121.jpg)
![Controller for solar panels - 2 - Vikiwat Controller for solar panels - 2](https://vikiwat.com/userfiles/productimages/96380/product_box_77122.jpg)
![Controller for sun panels - 3 - Vikiwat Controller for sun panels - 3](https://vikiwat.com/userfiles/productimages/96380/product_box_77371.jpg)
![Controller for solar system Solsum 4040 - 4 - Vikiwat Controller for solar system Solsum 4040 - 4](https://vikiwat.com/userfiles/productimages/96380/product_box_77372.jpg)
![Controller for solar system Solsum 4040, 40A, 12V/24V - 5 - Vikiwat Controller for solar system Solsum 4040, 40A, 12V/24V - 5](https://vikiwat.com/userfiles/productimages/96380/product_box_77373.jpg)
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![Controller for solar system Solsum 4040, 40A, 12V / 24V - 7 - Vikiwat Controller for solar system Solsum 4040, 40A, 12V / 24V - 7](https://vikiwat.com/userfiles/productimages/96380/product_box_77375.jpg)
Steca Solsum 4040 is easy to use solar charge controller with multifunctional LCD display, automatic battery voltage detection, full load protection, USB charging port and offers low self consumption. With increased module and load current, the controller is also suitable for even larger systems. Made in Germany.