Paradox Dual-Channel BUS Curtain-Type Wired Motion Detector for Sliding Windows and Doors, with anti-masking and pet immunity. Grade 3, Pet immunity (7.5 x 2 m), Range 10 m, Active anti-masking and pet immunity, Compatible with Digiplex Evo BUS, Dimensions: 123 x 61 x 43 mm, EN50131 Grade 3