Measures brightness (in lux) in outdoor areas Collected brightness values are displayed via the Homematic IP app Multiple applications in connection with other Homematic IP devices (e.g. switching lights on during darkness or moving shutters down in case of strong sunshine) Immediately ready for use thanks to battery operation and radio communication Flexible and easy wall mounting thanks to the supplied plugs and screws or use as standing unit For operation, the Homematic IP Access Point in connection with the Homematic IP app (no recurring costs), the Homematic Central Control Unit CCU2 or an appropriate partner solution is required, Weight: 0.1873929227 pounds, Manufacturer: eQ-3 AG