The LY-D20-24AC/DC is a DC to AC power supply from Polish manufacturer Polam-Elta. It is designed to convert 24V DC power input from a vehicle, solar inverter, or other DC power source to a regulated 24V AC power output suitable for powering electrical devices. The power supply has a peak efficiency of 95%, making it one of the most efficient of its kind. It features overload and short circuit protection, as well as a built-in over-temperature protection function. This device is RoHS compliant, which means that it is free of hazardous materials and is safe for use in electrical applications.