LKM459 Outdoor Temperature / Humidity Probe Modbus RTU
The LKM459 is an industrial-grade outdoor temperature and humidity probe with Modbus RTU (RS-485), designed for use in building automation, industrial plants, and control cabinet installation. The device measures temperature and relative humidity with a resolution of 0.1 (°C / % RH) and is factory calibrated. Minor field corrections can be made using two mechanical adjustment controls.
Technical and functional highlights:
- Communication: Modbus RTU (RS-485), designed as slave. Write access can only be activated with jumper JP1 set.
- Parameterization: Mini USB for configuration (e.g., slave ID, baud rate) and for optional power supply.
- Integration:
- Easy connection to controllers
- Modbus TCP/IP possible via external gateway
- The device is delivered fully calibrated and can be adjusted on site via P1 (temperature) and P2 (humidity).
- The mechanics feature a weather-resistant sintered cap, compact dimensions, and an easy-to-install housing.
- Areas of application: Outdoor measurement (weather protection recommended), HVAC systems, building management systems, and machine and plant monitoring.