Specification Binding : Electronics Brand : Sentry Industries Inc. Label : U S Automatic Manufacturer : U S Automatic PartNumber : 500410 ProductGroup : Photography ProductTypeName : SURVEILANCE_SYSTEMS Publisher : U S Automatic SmallImage_Height : 42 SmallImage_URL : http://ecx.images-amazon.com/images/I/51mOfZCXwAL._SL75_.jpg SmallImage_Width : 75 Studio : U S Automatic Title : Sentry 300 Control Board, Replacement Circuit Board for Sentry Gate Openers