Ajax DualCurtain Outdoor (Jeweller) – Bi-Directional Wireless Outdoor Curtain Motion Detector (White, 9NA)

Product Overview

The Ajax DualCurtain Outdoor Jeweller (SKU: 28273.81.WH3, 9NA region frequency) is a bi-directional wireless outdoor curtain motion detector engineered to secure property perimeters, long exterior facades, windows, and perimeter boundaries up to 30 meters (100 ft) in total length (15 meters per side). Featuring two independent optical systems pointing in opposite directions, it enables precise, independent detection range adjustments (4 to 15 meters) and custom sensitivity tuning for each side.

Powered by a four-sensor PIR array and proprietary ELSA (Extended Live Signal Analysis) multi-stage digital signal processing, DualCurtain Outdoor effectively filters out thermal noise, moving foliage, and pets. Operating over the encrypted Jeweller wireless radio protocol across open-space distances up to 1,700 meters (5,500 ft), the device features Near-Area Detection technology to cover blind spots directly beneath the sensor, Grade 3 active anti-masking protection, an IP54 weatherproof enclosure, and up to 4 years of autonomous battery life on pre-installed CR123A lithium batteries in a clean matte white finish.

Key System Features & Functionality

• Bi-Directional Perimeter Shield: Two independent optical systems protect opposite directions simultaneously with total coverage reaching up to 30 meters (15 meters / 50 ft per side).

• Independent Side Calibration: Detection distance (4-15 m), sensitivity levels, and detection modes can be configured separately for the left and right sides.

• Near-Area Detection Technology: Patented downward-pointing optical beam eliminates the traditional blind spot directly beneath the sensor to prevent intruders from crawling underneath.

• ELSA Correlation Signal Processing: Real-time digital signal analysis compares data from all 4 PIR sensors to distinguish human intruders from pets and natural environmental disturbances.

• Grade 3 Active Anti-Masking: Continuous optical IR scanning detects attempts to paint, tape, obstruct, or place obstacles in front of the lenses day and night.

• Encrypted Jeweller RF Link: Two-way encrypted radio communication operates up to 1,700 meters (5,500 ft) in open space with frequency hopping anti-jamming protection.

• Weatherproof IP54 Housing: Sealed, UV-resistant enclosure operates reliably in extreme temperatures ranging from -25°C to +60°C (-13°F to +140°F).