Solar modules deliver direct current (DC), usually with a voltage of 12 V. There are numerous devices on the market which can be operated with this voltage, for example low-volt halogen lamps, pumps, and motors. With relatively simple means, an Off-Grid System can be assembled by combining solar modules with low-cost camping devices, making the cost of a grid-connection economically unsound. The operating voltage is provided by the type label or operating instructions. Only a PV Module with the same voltage value as the appliance may be connected, otherwise the device will not function and will probably even be destroyed.

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