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How do I modify the detection range on my OPTEX FLX-A-AM indoor detector?

1Answers
DylanAnn
12/17/2025, 11:41:00 AM

Adjusting the detection area on your OPTEX FLX-A-AM Flexible Range Indoor Detector is straightforward. You can switch between wide and narrow detection zones using the Flip lens. Here's how:

  1. Remove the main unit: Begin by opening the hooked section (refer to the red arrows on the device) to easily remove the main unit.
  2. Change the Flip lens: To switch between detection zones, adjust the Flip lens. Align the letters on the cover and the lens according to your desired setting (Wide or Narrow).
  3. Lens Removal: Exercise caution when removing the lens. Avoid using a screwdriver or any tool that could damage it.
  4. Lens Installation: To install the lens, firmly press it at the three designated points, following the numerical order indicated. The internal settings for 'Wide' and 'Narrow' will automatically adjust based on the lens position. No DIP switches or other settings need adjustment.

When the lens is set to 'Narrow', the Microwave detection feature is automatically disabled. By following these steps, you can easily customize the detection area of your OPTEX FLX-A-AM to suit your specific needs.

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