... *Active Infrared Detecto *Distance:20-100M High Quality Infrared Beam Motion Detector CY-M20·Pure digital DSP chip control circuit, through launching ... up to 50,000 LUX, built-in automatic adjustment strong light filtering system, good performance against direct sunlight, completely against fluorescent ... .Exterior dimension 24cm*17cm*9cmWeight1.2kg High Quality Infrared Beam Motion Detector CY-M20