Amazon.com: Hall Research HBX-R HDMI Video Extender (Receiver) with Ultra-HD AV/IR/RS232 and Ethernet : Everything Else
HDMI Switch 16 Port 4K 60Hz Auto Switch With RS232/LAN-TESmart
1-CH HDMI Video Converter, RS232-IR remote Single fiber, FC, 20KM(SM) - BISMON | All of Comunication Products Terminated OTDR,Test OTDR,Fusion splice,Fiber Optic cable
Buy Wholesale China High Speed Rs232 To Hdmi Cable & High Speed Rs232 To Hdmi Cable | Global Sources
Vivolink HDBaseT HDMI transmitter with RS-232
HDMI/RS232 Extender Kit, HDBT, 4K/60 - Muxlab
Monoprice Blackbird 4K Fiber Optic HDMI Extender, 3300feet, 1000m, 4k@60Hz, IR, RS-232, HDMI 2.0 Support - Monoprice.com
HDMI HDBaseT Extender with IR/RS-232 Control and PoC - 100m, 3D, Power over Cable, 4Kx2K
Amazon.com: Tripp Lite HDBaseT HDMI Over Cat5e/6/6a Extender Kit w/Ethernet, Serial and IR Control, 1080p, Up to 500 ft. (BHDBT-K-E3SI-ER) : Electronics