28273.81.WH3 : Ajax DualCurtain Outdoor (9NA) White

28273.81.WH3 — Ajax DualCurtain Outdoor (9NA) White

Professional Long-Range Outdoor Bidirectional IR Curtain Detector for Perimeter Protection

The Ajax DualCurtain Outdoor (9NA) White is an advanced wireless curtain-type outdoor motion detector engineered for perimeter protection in high-security residential, commercial, and industrial environments. Using dual-sided IR curtain arrays, anti-masking technology, and long-range Jeweller communication, it delivers superior detection accuracy, reliable outdoor resilience, and full compliance for U.S. eCommerce publication standards.

Product Features

The DualCurtain Outdoor (9NA) enhances perimeter defense through two independent long-range IR curtain motion detectors, each equipped with advanced optics, SmartDetect algorithms, and full anti-masking protection.

• Dual-side monitoring, each side with 2 IR sensors (4 total).
• Adjustable detection range 13–49 ft per side (independent sliders).
• Near-zone detection with a 40° downward sector to eliminate blind spots.
• Optical angle shift up to 3° per side for precise coverage alignment.
• Long-distance wireless communication up to 5,570 ft (open area).
• Dynamic key block encryption, frequency hopping, and anti-jamming protection.
• Full anti-masking system detecting obstacles, paint, tape, or obstructions.
• Pet immunity up to 2.62 ft height.
• Works across extreme environments from –13°F to 140°F.
• Remote configuration through Ajax PRO and user apps.