ESL 541NBXT Smoke Detector







Smoke Detector, 500 Series, Photo, 4-Wire, Heat, 12/24VDC

Can use as a Replacement for ESL 449AT and ESL 449CT which are discontinued


The 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 500N series also offers choices for optional auxiliary relays and isolated heat sensors, not available before in the 500 series. GE offers CleanMe®, dust compensation, field replaceable optical chambers, multiple criteria heat algorithms, and self-diagnostics features.

  • Built-in sounder available in two- and four-wire models
  • Patented CleanMe® feature
  • Built-in dust compensation
  • Field-replaceable optical chamber
Alarm @ Relay Specifications
1.0 A @ 30.0 V
Alarm Current Consumption[Nominal]
15.0 mA
Detector Head Depth[Nominal]
2.0 in
Detector Head Diameter[Nominal]
5.0 in
Drift Compensation Adjustment
1 %/ft
Field Wiring Size[Minimum]
12.0 AWG
Field Wiring Size[Maximum]
24.0 AWG
Heat Detection Specifications - Fixed[Nominal]
135.0 °F
Heat Detection Specifications - Rate of Rise
>105°F and Rate of Rise 15°F/min
Maximum Ripple[Maximum]
10.0 %
Mounting Height[Nominal]
0.3 in
Operating Humidity[Minimum]
0.0 % RH
Operating Humidity[Maximum]
95.0 % RH
Operating Temperature[Minimum]
32.0 °F
Operating Temperature[Maximum]
100.0 °F
Packaging Basis[Nominal]
10.0 per carton
Regulatory Approval


Relay @ Contact Rating
500.0 mA @ 36.0 V
Reset Time[Maximum]
1.0 s
RFI Immunity @ ..
20.0 V/m @ 1000.0 MHz
Sensitivity - Photoelectric[Nominal]
3.1 %
Standby Current Consumption[Nominal]
70.0 µA
Storage Temperature[Minimum]
-4.0 °F
Storage Temperature[Maximum]
158.0 °F
9.6 oz
  • Model: ESL 541NBXT
  • 0 Units in Stock
  • Manufactured by: ESL

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