Power Range:2.0kW-8.0kW 50Hz / 2.2kW-8.5kW 60Hz,available in the following voltages:220V or 220/110V; WD+ ENERGY PORTABLE DIESEL GENERATOR SET SELECTION SHEET ·Powerful commercial level WD+ 4-stroke diesel engine with low vibration, low CO & NO emission ·Continuously supplying Clean & Pure Current ·Automatic low oil shutdown system to protect engine ·Wheel kit available for easy transportation ·All models equipped with AVR (Automatic Voltage regulator) ·Overload circuit breaker to protect generator and appliances NWD+ Energy (https://www.hiwedoplus.com) has been working hard in the mobile Diesel Generator Sets, Portable Generators for many years. WD+ Engery focuses on the long-term reputation of enterprise stability, product quality and financial strength.