Harmony: To IR Blaster extend or not - Connected Things - SmartThings Community
New Harmony 600 and Harmony 650 Remotes Debut | logi BLOG
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