550LS: Signature Series Surface-mount Audio Glass Break Detector, white (Discontinued)

The 550LS audio glass break detectors use microprocessor based multiple signature analysis. Both units are self-adjusting, and feature Automatic Gain Control circuits to filter the amplitude of ambient sounds and process all sounds at the same volume.


  • Specified for plate, wired, laminated and tempered glass
  • Glass panes size as small as 6″ x 10″
  • Signature supervision
  • No sensitivity adjustment
  • Omni-directional sensitivity
  • Indoors only
  • UL Listed


  • Alarm relay: SPDT Form C contact
  • Operating voltage: 10.5-16 VDC
  • Current draw: 66 mA maximum
  • Temperature tolerance: 14F to 120F
  • Tamper circuit: Normally closed contact 50 mA @ 24 VDC
  • Dimensions: 3″ W x 3″ H x 3/4″ D
  • Uses Model 515 tester
  • Order number: 0-550000

Installation Manual