Wenzhou Modern Group is the best China ups maintenance bypass cabinet manufacturer and supplier, as a professional company, we have our own factory. Welcome to wholesale ups maintenance bypass cabinet, bypass cabinet, ups bypass, ups maintenance bypass cabinet, ups maintenance bypass, uninterruptible power supply system products from us. The MODERN UPS Maintenance Bypass Cabinet is the ultimate in tailored solutions for power distribution, maintenance bypass, and voltage transformation in one easy to implement cabinet. It is designed to allow the transfer of power to full system bypass to perform service, testing and maintenance without interrupting power to the critical load. It can be as stand-alone unit that can be used with virtually any UPS. http://www.wzmodern.com