The Freedom Switch is a wireless switch that uses radio frequency to communicate with the host device and provides a reliable connection for switch activation. Two Freedom Switches can be used together for dual switch applications. The Freedom Switch works with the Accent 1400, Accent 1000, Accent 800, and Accent 700. Wired switches can also be connected to the Freedom Switch for single or two switch applications, but requires the use of the stereo cable which is included with the Freedom Switch Kit. Freedom Switch dimensions: Height 5/8" (.625); Diameter 2 7/8" (2.875)