Blue light always on -- cat odor eliminator enters Energy-saving Mode (Dispelling Odor & Dust-reducing) and cycles until the battery runs out.
Green light always on -- cat litter deodorizer enters High-efficiency Mode (Smell Deodorizing & Dusting) until the battery runs out.
UV Detector Mode -- cat litter box deodorizer can detect cat ringworm , dry urine stains and fungus.
Red light always on/flashes: Fully charged/Charging.
Long press 3 s to turn off.