ULRM LoRa radio module
The LoRa radio module (ULRM) operates at a license-free frequency of 868 MHz and uses a wireless transceiver SX1276 / SX1278 from Semtech Corporation.
The receiver sensitivity is -139 dBm, the output power is up to 100 mW, the communication channel budget is 156 dB. Even with a decrease in output power to +14 dBm, the range can reach 15 km.
Unlike the classic star-based LoRa network topology, the radio module (ULRM) is also able to work in a relay mode ("cellular" or "mesh" like ZigBee networks), which can significantly increase the coverage area of the LoRa network, without the need to install transmitting wireless equipment at high altitude.
The LoRa radio module (ULRM) operates in the "transparent" mode and can be connected to any device via RS485 / RS232 / CAN serial bus.
It is possible to programmatically change the power of the radio transmitter, the speed of data exchange over the serial port, the frequency of the channel, the mode of operation of the module and the identifier in the network.
All data transmitted over the air is protected by an AES encryption key.
The LoRaWAN protocol is certified by LoRa Alliance, and is based on IBM LMiC OS and IMST WiMOD. Provides work with LPWAN networks for the Internet of Things (IoT) and M2M applications, supports launching directly or "over the air".