RF extender/Blaster/Emitter for logitech harmony 890 /PRO 1000 1100 (no Mini IR) | eBay
Logitech Harmony Accessories
Amazon.com: 2.5mm to 3.5mm Adapter, Ancable 5-Pack 2.5mm Mono Plug to 3.5mm Mono Jack Adapter for Logitech Harmony Hub and IR Blaster, IR Emitter Extenders, IR Repeaters, IR Receivers : Electronics
Logitech Harmony Companion review: Enhancing the Logitech Hub with a simple, physical remote | TechHive
Amazon.com: UPBRIGHT AC/DC Adapter Compatible with Logitech Harmony 900 RF Extender Blaster (NOT fit Harmony 900 Remote Control.) LX700 Wireless Keyboard Mouse Power Supply Cord Cable Wall Home Battery Charger : Musical
ABLEGRID AC / DC Adapter For Logitech Harmony 900 RF Extender Blaster Power Supply Cord Cable Charger Mains PSU (NOT fit Harmony 900 Remote Control. ) - Walmart.com