521NCSXT - Photoelectric 2-Wire Smoke Detector w/ Heat

The ESL 500N series two- and four-wire conventional photoelectric smoke detectors bring together trusted technology and a full line of features to meet the demands of every type of application. The 500N offers sounder models in two- and four-wire applications, specifically to meet residential code requirements. The 521NCSXT has the additional benefit of low current draw which makes it compatible with a wide variety of control panels. The ESL 500N series also offers choices for optional auxiliary relays and isolated heat sensors, not available before in the ESL 500 series. ESL offers CleanMe, dust compensation, field replaceable optical chambers, multiple criteria heat algorithms, and self-diagnostics features.

Features

• Built-in sounder available in two- and four-wire models
  
• Patented CleanMe feature
  
• Built-in dust compensation
  
• Field-replaceable optical chamber