Research and Development solution 03. 75 3.4 Expansion Radio Board The Expansion Board allows to connect two radios at the same time. This means a lot of different combinations are possible using any of the radios available for Waspmote: 802.15.4, ZigBee, DigiMesh, 868 MHz, 900 MHz, LoRa, WiFi, NB-IoT, Cat-M, 4G, Sigfox, LoRaWAN, Bluetooth Pro, Bluetooth Low Energy and RFID/NFC. Besides, the Expansion Radio Board can be utilized to connect the Industrial Protocols modules. Expansion Radio Board Multifrequency Sensor Networks: (2.4 GHz – 868/900 MHz) Sigfox - ZigBee hybrid networks NFC (RFID) applications with 4G LoRaWAN - WiFi hybrid networks Industrial Protocols – wireless hybrid networks Applications: Models Models Modules Modules