The device for precise temperature monitoring utilizes RS485/Modbus RTU communication and allows for data collection from multiple points simultaneously. Thanks to two one-wire buses, each supporting up to 8 DS18B20 sensors, it provides a comprehensive overview of the temperature conditions in the system. Data is stored in Modbus registers for easy integration into the LK3 and LK4 control systems. Compatibility with PC via RS485/USB converter enables flexible use even in monitoring applications with simple configuration and quick deployment.