Welcome to Powerex, the leading , established in 1986. We provide full series including line-interactive UPS, on-line high frequency UPS and on-line low frequency UPS. Our UPS devices are 100% made in Taiwan. They allow switching to UPS supply automatically when external power supply is off or the voltage is abnormally over-high or over-low. They are featured by multiple audio warning functions and various LED indicating functions. Customizing long time discharge model is acceptable. Here you can find high quality and high efficiency UPS device, please feel free to contact us to get more details.