Product Description automatic door operator control box QN-DRAC108 for rolling door work with chain motor 220V with UPS Specification: 1.220V AC motor 2.Works with chain motor 3.Suppliers with standby power to close/open door more than 8 times after power loss 4.long standby time after power failure 5.soft start and stop, with photo electric protect 6.standard type:1 control box + 2 remotes NEW Workshop From May 2014, our NEW workshop and production line are put into use. Dust-free workshop ensures the best products' quality ! Company Information. About payment Package & shipping