2- XBee S6B Radio Modules/USB Sparkfun.com Brd. Serial Communication Over WIFI | eBay
Digi International - NEW Digi XBee3 Series Smart Edge IoT Modules and Modems — LED professional - LED Lighting Technology, Application Magazine
Nooelec - Nooelec SAWbird+ 2m Barebones - Premium Dual Ultra-Low Noise Amplifier (LNA) & SAW Filter Module for 2-Meter Amateur Radio Band Applications. 145MHz Center Frequency - SDR Addons - Software Defined Radio
Radio module for long-range applications - XBee-PRO® 900HP - Digi International
XL9-UA by Digi International | Modem Modules | Arrow.com
u-blox Positioning Modules Now Available for Distribution in the US Through Digi-Key | Business Wire
XB3-24APS Digi | RF/IF and RFID | DigiKey
RF Modules | Wireless Connectivity Solutions for Remote, Low-power, Secure IoT Product Designs | Digi International
XBee PRO S2C DIGI XBP24CDMWIT 001 RF Module DigiMesh 2.4 Through Hole Module, XBee PRO S2C DigiMesh 2.4GHz TH Wire Ant|Home Automation Modules| - AliExpress
802.15.4 RF Modules | Multipoint Wireless Networking | Digi International