The Busch Presence Detector Universal BT Relay 6819/31-24 is an advanced device for the automatic control of lighting systems. Equipped with mixed light measurement, this presence detector enables brightness- and motion-dependent switching of light sources. The Bluetooth interface allows for easy parameterization and operation via smartphone or tablet, facilitating user-friendly adjustment of settings. The detector is designed for ceiling mounting and offers a comprehensive detection range that can be extended through a master/slave combination. With various operating modes, including semi-automatic and fully automatic operation, as well as a presence simulation, this presence detector is ideal for indoor use. The integrated storage of the on-time and the brightness-independent test operation for evaluating the detection range provide additional functionalities that optimize energy consumption and enhance efficiency.

• Bluetooth interface for easy parameterization and operation via mobile devices
• Detection range of up to Ø 12 m for moving persons
• Versatile operating modes: semi-automatic, comfort, and fully automatic
• Presence simulation and integrated storage of on-time for energy monitoring
• Adjustable switch-off delay of 1 to 30 minutes or short pulse.