Paradox Motion Detector, dual-zone indoor/outdoor IR perimeter sensor, dual-purpose for sliding doors and windows, anti-masking, compact 12 x 6 x 4.3 cm. For protecting windows, doors or fences. Range 10 m, narrow beam 0.5–2 m. BUS-addressable. Requires detection by both PIRs to trigger the alarm. High resistance to false alarms. Pet immunity up to 50 cm. Certified to EN 50131-2-2 Grade 3. Mounting height: 2.1–2.7 m.