Best Buy: Logitech Harmony Precision 6' IR Cable (2-Pack) Black 993-001218
What IR blasters are and why you need them | logi BLOG
Control ZigBee & Z-Wave With Harmony Home Hub Extender | logi BLOG
Home Hub Extender
Amazon.com: Harmony IR Adapters, Ancable 2-Pack 2.5mm Mono Plug to 3.5mm Mono Jack Connector for Logitech Harmony Hub and IR Blaster, IR Emitter Extenders, IR Repeaters, IR Receivers : Electronics
New Harmony 600 and Harmony 650 Remotes Debut | logi BLOG