Features: 1DSE4520 is a mains failure self?starting generator controller, suitable for a variety of stand?alone applications. 2LCD display screen can display alarm information such as ordinary alarm, electrical trip and shutdown, and provide monitoring and protection functions. 3Can monitor the engine speed, oil pressure, water temperature, oil level and the frequency, voltage, current power of the generator, and provide complete protection. 4With multiple flexible input, output and protection functions, it supports diesel, gas and gasoline EFI and non?EFI (generator frequency detection). 5The parameters can be set through the DSE software, or the parameters can be edited on the front panel. Package included: 1 x Controller2 x Mounting Screws1 x User Manual