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Corridor lens JS-7904

JS-7904

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JABLOTRON ALARMS S.A.

The JS-7904 is a replacement corridor lens for Jablotron JA/JS PIR detectors, creating a narrow, long-range detection beam ideal for hallways. Typical coverage is approximately 25 m long × 3 m wide at the recommended mounting height of 2.5 m; lens swaps without changing detector electronics.

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JS-7904 is an interchangeable corridor lens for Jablotron JA and JS series PIR motion detectors. It converts the detector’s standard coverage into a focused, elongated beam suitable for monitoring linear areas such as hallways, passages and stairwells.

In normal installation conditions the lens provides an approximate detection zone of 25 m in length and about 3 m in width at the recommended mounting height of 2.5 m. The concentrated beam reduces side coverage and helps prevent unwanted detections from adjacent areas.

Key benefits:

  • Directed coverage for long, narrow corridors and passageways;
  • Reduced lateral sensitivity to minimize false alarms from outside the corridor;
  • Quick, reversible replacement in compatible JA/JS housings without altering the detector’s electrical parameters.

Installation notes: verify actual coverage on site and adjust detector sensitivity according to room geometry, mounting height and potential heat/motion sources. The JS-7904 is an optical accessory only; system settings and power remain those of the host detector.

Perform functional tests after installing the lens to confirm alignment and ensure the detection beam covers the intended corridor length without generating unwanted detections in nearby zones.

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Tehnička specifikacija JS-7904

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