System Sensor APB200


AP Series Intelligent Sounder Base

Availability: Please Call for Availability

  • Factory New
  • Material Obsolete
Brand: System Sensor Part #: 81381 Categories: , Manufacturer Part #: APB200 Tag:


APB200 System Sensor AP Series Intelligent Sounder Base The APB200 System Sensor is a low-frequency sounder base, Designed to meet the NFPA 72 sleeping space requirement to produce a fundamental frequency of 520 Hz +/ 10% with a square wave or its equivalent. Studies show that a lower frequency, centered around 520 Hz, is the most ideal to awaken sleeping occupants, even those with mild to severe hearing loss.


Weight 0.4 lbs

System Sensor



Production Status


Product Notes

Replacement: APB200-WH


  • Addressability for maximum configuration flexibility
  • Two volume levels (75 or 85 dBA)
  • Multiple event-driven tone outputs
  • Supports ANSI Temporal 3, and ANSI Temporal 4
  • Ability to synchronize with System Sensor notification devices
  • UL 268 and UL 464 compliant
  • Pre-wire mounting plate fits various junction box sizes
  • Mechanical locking feature prevents removal of attached sensor head
  • Additional terminal connections on Canadian model (APB200COA) enable silence feature
  • 520 Hz +/– 10% square wave tone (APB200-LF)

APB200/APB200-LF catalog number 5939


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