The RC−2C is a 2−button controller that sends a series of RS−232 or IR commands with the push of a button. It operates serial or IR−controlled devices such as projectors, displays, and switchers.- 2 Multi-Color & Label Capable Buttons.- 1 RS-232 Port - Controls a device via serial control protocols.- 1 IR Port - Controls a device via IR protocols.- Optional Ports - Add control ports with the PL−18 Control Port Expander.- Memory - Up to 4 commands per macro and 4 toggling macros per button.- Dimensions - 7.9cm x 1.59cm x 12.4cm (3.12" x 0.63" x 4.88") US; 8.6cm x 1.59cm x 8.6cm (3.39" x 0.63" x 3.39") and 8cm x 1.59cm x 8cm (3.15" x 0.63" x 3.15") EU W, D, H.