Amazon.com: IR Repeater USB IR Extender Infrared Remote Control Transmitter External Universal Hidden IR Emitter for 38-56kHz Cable Box, Set-top Box, DVR/STB, Roger, Cabletica, Comcast, Spectrum, Xfinity (1 PC) : Electronics
Amazon.com: BAFX Products (Infrared) IR Remote Control Extender or IR Repeater Kit - Control 1 to 8 Devices (Expandable to 12!) : Electronics
SZBJ Wireless IR Repeater, Repeater System Kit Extender,Remote Control Extender Kit WL E4|Remote Controls| - AliExpress
Ir Repeater Infrared Remote 1 Receiver 4 Emitters Control Kit Hidden Ir System For Satellite Tv Receiver Cd Dvd Blu-ray Player - Audio & Video Cables - AliExpress