Alarm Systems

Aleph, BLC-20, Indoor Curtain Passive Infrared Detector

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BLC-20 (Indoor Curtain Passive Infrared Detector)

  • Indoor, Curtains Model, Wall Mount
  • Built-in smart microprocessor chip with accurate action and automatic sensitivity adjustment
  • Light filter function, strong anti-interference capability, and high false alarm capability
  • LED window: action more rapidly after setting
  • Latest Fresnel lens design with stronger optical focusing
  • Unique product modeling design with a distinct difference from other products



  • Narrow angle
  • Multi-Focus Lens
  • Selectable pulse count: 2 or 4
  • LED On/Off Switch
  • Tamper switch


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