SY Electronics SY-RSM4 matrix switcher

The RSM4 is a serial matrix with 4 bi-directional ports. Each Rx and Tx connection can be routed to any of the other Rx or Tx ports making this the perfect companion when additional ports are required when controlling a single device from multiple points and for easily configured room divide applications. 10 Presets are available and can be activated from any of the Rx connections.