Optex RX-40PI PET Immune PIR Detector

Optex RX-40PI | Scene: Indoor | Optional 60ft. x 6ft. FL-60N lens. (Not included) | Temperature compensation | Selectable pulse count (2 or 4). Fast Shipping. Buy Now.

The Optex RX-40PI is a residential pet immune passive infra-red (PIR) motion detector featuring a 40' x 40' coverage area.

Optex improves its patented Multi-focus Optics technology to create Quad Zone Logic for accurate detection of humans. Using this logic the RX-40PI had been designed to to give extremely high false alarm protection with tolerance to spot temperature changes from curtains or small to medium size animals. Optex's Optical Quad Technology uses taller detection zones divided into upper and lower areas. It detects IR energy changes in both areas and then couples them with for extremely accurate detections. Offering very high reliability in hostile areas.

Quad Zone Logic & Multi-Focus Optics:

Optex has 2 different detection logics, Quad Zone Logic and Multi-Focus Optics. Each logic creates high vertical density detection zones by original optical technology to prevent false alarms. Normally, a detector uses twin elements to create two detection zones but Optex's detectors create an extremely high vertical zone density, two or three times the size of that in conventional PIRs. These taller zones capture the entire body mass of a person and enable detection of the smallest temperature contrast between them and the background.

• Multi-Focus Optics - If a person is hidden from the PIR detector, he or she is not detected. In ordinary residences and offices, there are desks, shelves and other furniture. When these objects hide a part of the body, it may make detection difficult.


• Quad Zone Logic - Optex utilizes another technology, "QUAD Zone Logic in order to achieve the highest resistance against false alarm sources like pet and small animals. Quad Zone Logic generates more detection zones thereby increasing the density of the coverage area. This greatly enhances the sensors ability to discriminate between people and small animals. For example, in the shorter distance, the highly dense, multiply segmented zone pattern requires 4 to 8 zones to be broken by human sized objects. At the furthest ranges, 2 or more zones captures the humans, while small animals may affect one or only part of one zone.

Spherical Fresnel Lens Design:

Spherical lens provides a precise focal length to each of the multiple lens segments (uniform distance between each lens segment and the pyroelectric elements). This enable each lens segment to face precisely towards its detection area, and creates detection zones without distortion, achieving a new level in lens design precision.

The spherical fresnel lens differs from the conventional flat fresnel lens in that the distance between the lens and the pyro-electric elements is the same across the entire lens (the focal length is always the same). It therefore collects infrared rays more efficiently.

Each focused image (detection zone) has sharply defined edges (=accurate sensitivity) and it produces the maximum signal contrast against the background area (=high detection performance). This sharp focus provides the maximum signal power to the detector, compared to a weak, sluggish signal created by a poorly focused zone.

Sealed Optics:

The pyroelectric element's field of view is fully enclosed by the sealed optics mechanism of the lens, cover and the sealed optics foam. This mechanism prevents insects from crossing in front of the pyroelectric element. The sealed optics also protect against draft through wiring holes. Easy knockouts reduce extra space between holes and cables, further enhancing the sealing of the entire housing.

Advanced Temperature Compensation:

At a higher ambient temperature, the temperature difference between the background and a human body will be reduced. In this case the PIR could fail to readily detect a human body. With conventional temperature compensation functions, the sensitivity of detector must be set higher at 35 degree C than the sensitivity at 25 degree C (normal temperature) in order for the detector to offer a stable performance. However, with this setting, the sensitivity of the detector is excessively high at 40 degree C or over, which could lead to various problems. To overcome this drawback, Optex's advanced temperature compensation function allows the detector's sensitivity to automatically drop at 40 degree C or higher so that the detector can perform more reliably within a wider ambient temperature range.

Note: Pet immunity is not available with optional FL-60N long range (extremely dense multi-layer curtain lens).