CAN BE USED WITH FORKLIFTS OR HEAVY EQUIPMENT THAT PROVIDE 20 to 42 VDC INPUT POWER. The DC Laptop Power Adapter's micro-processor control adjusts the output voltage to the correct operating voltage and amperage requirement for this series of laptops. - Adapters are housed in durable ABS cases & epoxy encapsulated to resist shock and moisture. - Output Short Circuit Shut Down. - Output Current Limit. - Input Noise Filter. - Internal Overtemperature Shut Down. - Low Input Voltage Shut Down. - High Input Voltage Shutdown. - Automatic Shut Down Reset. - 1 Year warranty includes coverage of electronics, cables and connectors. - CE