RS485 sensor nodes are often used in smart agriculture, environment monitoring, or factory & building automation and work up to 1.2 km when using AWG 18 cables. If you already have such nodes but need to extend the distance, or would like to reduce the need for long cables, you could make use of Dragino RS485-LN RS485 to LoRaWAN converter which will work up to 10+ kilometers depending on conditions.
Dragino RS485-LN key features & specifications:
- MCU - STMicro STM32L072CZT6 Arm Cortex-M0+ microcontroller MCU @ 32 MHz with 192 KB Flash, 6 KB EEPROM, 20 KB RAM
- Connectivity
- LoRaWAN