Features: Used to convert D C12V/24V to AC220V. Built-in intelligent protection system, stable and reliable. USB output Charging interface available. Compatible with multiple sockets. Digital display shows input voltage clearly, you can know the status in real time. Intelligent temperature control. Multiple safety protection: low voltage protection; high voltage protection; over-current protection;short circuit protection; overheat protection; overload protection; electrical shock protection; testing protection. Can be used for all less than 250W (electric car cigarette-lighter Power supply does not support more than 150W).