The DD669 from Aritech is a high-performance ceiling-mounted motion sensor designed for wide-area indoor coverage. Combining passive infrared and microwave detection with advanced optical and signal processing technologies, this dual technology sensor provides reliable 360° intrusion detection over a 20-metre diameter. Its 18-curtain configuration ensures complete coverage, including undercrawl detection, making it ideal for commercial and institutional environments.

• 360° ceiling mount coverage – Provides a full circular detection pattern up to 20m in diameter.
• Dual technology sensing – Combines PIR and S-band microwave radar for enhanced accuracy and stability.
• Step & Gliding Focus optics – Patented mirror design delivers continuous detection curtains that track movement without interruption.
• 18 detection curtains – Offers dense coverage including undercrawl zones for comprehensive protection.
• 4D signal processing – Filters out environmental noise and distinguishes between genuine threats and false alarms.
• Bi-curtain processing – Optimised performance in challenging or harsh indoor environments.
• Selectable detection pattern – Coverage can be tailored using mirror masks to suit specific room layouts.
• Range-controlled radar – Operates on the S-band for stable performance with minimal interference.
• Sealed optics – Prevents dust and contamination from affecting sensor accuracy.
• Plug-in electronics – Designed for fast, efficient installation and maintenance.
• No height adjustments needed – Performs reliably at various ceiling heights without recalibration.

The DD669 delivers advanced motion sensing with exceptional false alarm immunity, making it suitable for open-plan commercial spaces, retail environments, and high-traffic indoor areas where precision and reliability are essential.