CPC A01G 7/045 (2013.01) [H05B 45/20 (2020.01); H05B 45/46 (2020.01); H05B 47/115 (2020.01)] | 20 Claims |
1. A horticultural lighting device for sustaining indoor plant growth, wherein said horticultural lighting device comprises:
a lighting unit arranged for providing illumination in accordance with one of a plurality of modi, wherein, for each modus, said lighting unit is arranged for illuminating in different electromagnetic spectrums;
a power unit arranged for receiving a mains supply voltage and for providing power to said lighting unit;
a control unit arranged for detecting interruptions in the received AC mains supply voltage and for switching to a next modus within said plurality of modi for said lighting unit triggered by detected interruptions, wherein the next modus is selected based on a duration of at least one detected interruption of the detected interruptions or a particular sequence of the detected interruptions in the received AC mains supply voltage.
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