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.