---
title: AJAX Security - DualCurtain Bi-directional Motion Sensor
date: 2024-09-26T21:33:46Z
modified: 2026-05-22T12:01:37Z
permalink: "https://tech.co.za/product/ajax-security-dualcurtain-bi-directional-motion-sensor/"
type: product
status: publish
excerpt: Detection up to 15m, Battery up to 4 years, Anti-masking protection, Pet Immunity, Independent Zones
wpid: 509676
product_brand:
  - AJAX
product_type:
  - simple
product_visibility:
  - featured
product_cat:
  - Security
featured_image: "https://tech.co.za/wp-content/uploads/2024/09/Motion-Sensor-1.jpg"
---

**Specifications:**

**Compatibility**

**Hubs**

- Hub Plus
- Hub 2 (2G)
- Hub 2 (4G)
- Hub 2 Plus
- Hub Hybrid (2G)
- Hub Hybrid (4G)

**Radio signal range extenders:**

- ReX
- ReX 2

**Maximum effective radiated power (ERP):** up to 20 mW

**Radio signal modulation:** GFSK

**Radio communication range:** up to 1,700 m

**Frequency hopping:** To prevent radio interference and jamming.

**Detection**

**Sensitive elements:** 4 × IR sensor

**Motion detection distance:** 4–15 m for each side, When installed at a height of 0.8 to 1.3 m. Adjusted separately for each side using sliders on the detector rear panel.

**Viewing angles:** horizontal – 4.5°, vertical – 90°

**Motion detection speed:** 0.3 to 2.0 m/s, The direction of the detector lens should be perpendicular to the intended path of entry into the facility.

**Near zone detection:** When enabled, the detector’s upper IR sensor receives an additional sector of view, directed at an angle of 40° downward of the main sector. This is necessary to detect motion near the detector and reduce blind spot.

**Viewing angle shift:** When enabled, the optical system viewing angle can be shifted by 3° in the horizontal plane., Adjusted separately for each side using sliders on the detector rear panel.

**Sensitivity:** 3 levels

**Pet immunity:** height: up to 80 cm, weight: irrelevant

**Protection from false alarms:** SmartDetect, ELSA, Software algorithms.

**Temperature compensation:** Effective motion detection at temperatures from -25°C to +60°C.

**Power supply:** 2 × CR123A battery

**Enclosure**

**Dimensions:** 174 × 123 × 88 mm

**Weight:** 615 g

**Operating temperature range:** −25°C to +60°C

**Operating humidity:** up to 95%

**Protection class:** IP54