The System 500 is a sturdy, durable, dual-access unit that provides both automatic and manual operation. It includes two automatic options: Standard Automatic, with an open/close time of 18 to 20 seconds; and Optional Speed, which provides an energy saving 8- to 10- second cycle. Both options allow an adjustable hold-open range of 0 to 60 seconds to meet your specific needs. 

In the manual mode, the door opens with less than 12 pounds of pressure, and spring closes slowly to ensure safety. The System 500 meets the access requirements of ANSI 156.19, and can be fitted to your existing door, making it easy to install and maintain.