US 915 Mhz version- there are different frequencies for different regions. This Amazon listing is for the 915 Mhz radio version. Note that the RAK4631 board houses the RAK4630 module which is necessary for the device to operate. The RAK4630 stamp pictured is not incorrect, it comes presoldered on the RAK4630 board.

Start immediately with our Meshtastic Starter Kit in a few steps. This kit contains all needed items to setup a meshtastic node including RAK baseboard (19007), core board (4631 w/4630 stamp), and LoRa + Bluetooth antennas, USB cable, and screw kit. Optional items not included are battery, case, OLED, GPS, other sensors. A screen is not required to use this kit because you can operate it from the Meshtastic app on iPhone or Android.

Easily integrates with Meshtastic app on iPhone or Android. Comes preflashed with working version of Meshtastic firmware. Because items are flashed before shipping to Amazon warehouse, firmware may not be latest version as of date of item delivery. Firmware updates freely available from Meshtastic site. Basic support offered by vendor if assistance is needed.

Meshtastic is an off-grid messaging system using inexpensive hardware to create your personal mesh. Radios forward messages to the next node to distribute them over the network. Communicate kilometers/miles between nodes. Internet-connected relay nodes enable the conversation to move online too. Product Features WisBlock Base board and the RAK4631 WisBlock Core module, already flashed with the Meshtastic firmware. Package Inclusion 1pc WisBlock Base (RAK19007) 1pc WisBlock Core (RAK4631) 1pc IPEX LoRa PCB Antenna 1pc IPEX BLE PCB Antenna Assembly Screws USB Type C to Type A Cable US915 915 MHz version