The 286D Dual Blink-IR Designer Emitter contains small infrared LED's housed in a miniature, designer styled, black appearing, injection molded plastic shell. Unlike other emitters , the 286D emits visible red light in addition to IR (infrared) control si gnals when activated by IR commands sent to it by IR receivers or other Xantech controllers. The emitters of the 286D are wired in series and are designed to be installed directly on the IR sensor windows of the controlled components.