This is an Open Box item: The item was returned and may show signs of having been opened. However, it is in its box, with all documentation, and with full warranty! That also means this special price is ONLY valid for this item. The VictronOrion-Tr 12/12-18A DC-to-DC converters is a solution when an fully isolated Voltage is needed that is constant. The input is a 8 – 17 Volt source such as a 12V battery, the output Voltage can be adjusted from 10 to 15 Volt DC (and is isolated from the input source). The maximum load it can power is 18 Amp. The Orion converters have an input for a switch, that acts as a remote on-off. They are non-isolated (the input and output share the same negative). Please note that Victron’s converters are not charge controllers! They produce a constant output Voltage. Features Isolated Remote on/off 8  – 17 Volt in, 10 – 15 Volt DC out Less than 20 mA no-load current