Kramer Electronics tp-580r Audio/Video Extender – A/V Extender (RS-232, 0 – 40 °C, -40 – 70 °C, 10 – 90%, 12 V, 188 x 114 x 24 mm Black

Kramer Electronics HDMI, Bidirectional RS?232 & IR over HDBaseT Twisted Pair Receiver TP-580R

Kramer Electronics HDMI, Bidirectional RS?232 & IR over HDBaseT Twisted Pair Transmitter TP-580T