Integrated PWM for control and high power crystal modular pipe for drive. The power supply inverters offer the featured of quick strain, anti-interference, anti-thunderstruck, steady output voltage frequency, good adaptability and practical. Inside the SPS, there is provided with a battery while the external battery terminal is also provided, which can help you to get red of the trouble of the power failure. Main Type: 200W, 500W, 1kW, 2kW, 3kW, 5kW, 10kW, 20kW......