Curtain lens JS-7902

JS-7902 is an alternative optical lens for PIR detectors that produces a narrow vertical "curtain" detection pattern instead of broad area coverage. It is intended to create a defined detection barrier for crossings (for example doorways or narrow corridors).

By narrowing the detection field the lens helps reduce unwanted alarms caused by movement outside the guarded curtain (small pets, floor-level activity, or general room motion). After fitting an alternative lens always consult the detector manual and perform on-site coverage tests.

Key technical data

• Type: vertical curtain (curtain) replacement lens for PIR detectors.
• Working range (recommended mounting height 2.5 m): up to 10 m.
• Beam angle: approx. 12° (narrow vertical zone).

Compatibility & notes

The lens is listed as accessory for several Jablotron PIR detectors; verify compatibility with the specific model before installation. Replacing the standard lens changes the detector's coverage and may affect normative compliance for some models (e.g. EN 50131). Test detector coverage and sensitivity after installation.

Applications: creating virtual barriers at entrances, protecting windows or monitoring very narrow aisles where a vertical detection curtain is required.