All Elsner products are developed and produced at the company headquarters in Ostelsheim, Germany. Highly qualified staff and the latest technology guarantee a consistently high standard of quality. Elsner Elektronik offers both complete systems for climate control in buildings and individual components for various data interfaces (KNX, RS485 and Modbus). Whether control centre, weather or indoor sensor, actuator or system device: All our products combine flexible technical solutions, ease of use and future-oriented design.