GE Security ESL 521B

2-Wire Photoelectric Smoke Detector

2 Yr
Warranty Included
2-Wire Photoelectric Smoke Detector, Remote maintenance reporting, Built-in drift compensation, Field replaceable optical chamber, low-profile design, Meets NFPA 72 field.
List : $57.75  
Price : $40.44
Save :  $17.31
Qty :
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GE Security ESL 521B 2-Wire Photoelectric Smoke Detector


The 500 series self-diagnostic, 2-wire smoke detectors are conventional direct-wire detectors with analog features including drift compensation, multi-criteria detection, and remote maintenance/trouble reporting (CleanMe). The detectors continually monitor their own sensitivity and operational status and provide a visual and remote trouble condition if they drift out of calibration range or fail internal diagnostics



  • Remote maintenance reporting (CleanMe) reduces false alarms
  • Built-in drift compensation reduces false alarms
  • Field replaceable optical chamber makes servicing easy
  • Small, low-profile design blends in with any environment
  • Meets NFPA 72 field sensitivity testing requirements without the need for external meters
1 Year Extended Warranty
$6.07  | Add to Cart

2 Year Extended Warranty
$10.11  | Add to Cart

3 Year Extended Warranty
$14.15  | Add to Cart