Smoke Detectors 
ESL 521B Two-Wire Photoelectric Smoke Detector with CleanMe Reporting 521B

The ESL 500 Series including the 521B and 521BXT self-diagnostic, two- wire photoelectric smoke detectors are the industry's first conventional direct-wire smoke detectors with analog features such as drift compensation, multi-criteria detection and remote maintenance/trouble reporting (CleanMe). The 500 Series continually monitor their own sensitivity and operational status, and provide a visual indication if they drift out of the sensitivity range or fail internal diagnostics. The 521 Series also can send a signal (CleanMe) to any compatible control panel, allowing the dealer/installer to schedule a service call and avoid a false alarm.

UL, ULC CSFM

Features:

· CleanMe - remote maintenance reporting reduces false alarms (2-wire detectors only)

· Smart dual fixed/rate of rise heats work with photo chamber to catch fires faster (521BXT)

· Built-in drift compensation reduces false alarms

· Field replaceable optical chamber makes servicing a snap

· Small, low profile design blends in with any environment

· Compatible with most fire alarm and security panels