BRK® SA520B Hardwired Smoke Alarm With Battery-Backup, Photoelectric, 120 VAC 60 Hz with (2) AA 1.5 VDC Battery, 85 dB



BRK® SA520B Hardwired Smoke Alarm With Battery-Backup, Photoelectric, 120 VAC 60 Hz with (2) AA 1.5 VDC Battery, 85 dB

  • NCE Part No: 855768
  • MPN: SA520B
  • UPC: 02905400205

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BRK SA520B (model SA520) is a wire-in, 120V AC 60Hz single and/or multiple station photoelectric smoke alarm specifically designed for residential and institutional applications including sleeping rooms of hospitals, hotels, motels, dormitories, and other multifamily dwellings as defined in standard NFPA 101. BRK SA520B has been fully tested and complies with, UL217, CSFM, NFPA 72, and NFPA 101 and other agencies that model their codes after the above agencies. It meets building codes where AC with battery backup smoke alarms with wireless interconnect and silence features are required and with model building codes published by the ICC. BRK SA520B is a state of the art wireless smoke alarm designed to provide early warning of a fire. It features a fully insect screened Photoelectric smoke sensing chamber, an 85dB horn, a full function test switch and a silence feature. This smoke alarm interconnects via wired and/or wireless communication. Wireless communication is on a reliable and secure radio frequency of 915 MHz frequency with 65,000 security codes and 3 channel frequency hopping. It operates on a Mesh Network; a two-way communication format that sends, receives and resends the alarm signals providing a more reliable network. It also features tamper resistant locking pins that lock alarm to the mounting bracket and battery drawer to prevent removal of battery or alarm. Perfect for apartment, dormitory or hotel applications. Designed for wall or ceiling mounting.

BRK® Smoke Alarm, Hardwired, 120 VAC 60 Hz with (2) AA 1.5 VDC Battery, Photoelectric, Alarm: Audible, Up to 18 Units Interconnection, 85 dB Alert, Red LED Alert, 10 to 95% Humidity Rating, Photoelectric Sensor, LED Display, Wireless Wiring, 40 to 100 deg F Operating, White, 5 in Dia x 2 in H


Detection Method      :      Photoelectric
Audible Alert      :      85 dB
Power Source      :      120 VAC 60 Hz with (2) AA 1.5 VDC Battery
Display      :      LED
Type      :      Hardwired
Dimensions      :      5 in Dia x 2 in H
Operating Temperature      :      40 to 100 deg F


  • Wireless interconnect enabled alarm
  • Bridge unit - wireless photoelectric hardwired smoke alarm
  • Single button test/silence
  • Two silence features - can silence the low-battery chirp for up to eight hours or temporarily silence an unwanted nuisance alarm
  • Add additional OneLink alarms and hardwired alarms, links all alarms together for a complete system
  • Hardwired interconnect and RF interconnect reliable and secure radio frequency communication between alarms, 915 MHz frequency with 65000 security codes and 3 channel frequency hopping
  • Optipath 360 Technology™ - patented technology provides 360 degrees of direct access to the smoke sensor
  • Perfect mount allows for easy alignment of alarm
  • Electronically simulates smoke condition, causing the unit to alarm, press and hold test/silence button
  • Automatic when smoke clears
  • Up to 18 units, RF or hardwired (needs SA520B bridge unit), CO and heat alarms and relays, maximum of 12 smoke alarms


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