UTC (Formerly GE Security/ESL) 541NBXT 4-Wire Photoelectric Smoke Detector, Heat

UPC: 046188094523
Also known as: ES-541NBXT, GES-541NBXT

The UTC 541NBXT self-diagnostic, 4-wire smoke detector is a conventional direct-wire smoke detector with analog features such as a heat sensor, drift compensation, and multi-criteria detection.

The 541NBXT continually monitors its own sensitivity and operational status, and provides a visual and remote trouble condition if the unit drifts out of the sensitivity range or fail internal diagnostics.

The 541NBXT is equipped with both a rate-of-rise and fixed temperature sensor and operates on 6.5 - 33 VDC.


Also known as: ES-541NBXT, GES-541NBXT

Technical Specifications: Listings: 511 UL 268 Reset time: 1 second minimum lMounting dimensions: 5.25 in. (133 mm) dia.; 0.3 in. (8 mm) high Detector head dimensions: 5.5 in. (140 mm) dia.; 2 in. (50 mm) high Drift compensation adjustment: 1.0%/ft. max UL 2-wire compatibility identifiers: S10A, S11A Field wiring size: 12-24 AWG Color: White head and base RFI immunity: 20V/m minimum; 1-1000MHz Operating humidity range: 0 to 95% non-condensing Operating termperature: 32° to 100°F (0° to 37°C) Photoelectic sensitivity: 3.1% + 0.5 - 1.0% Alarm contacts: 500mA @ 36VDC (resistive) Aux. relay contacts: 2A @ 30VDC Typical alarm current (12/24V): up to 60mA max. if not limited by control panel Typical average standby current: 70 uA (12/24V) Maximum ripple: (pk to pk) 10% (V p-p) Power Supply: 12/24 V operation: 8.5 to 33 VDC polarity sensitive

For more information about the UTC (Formerly GE Security/ESL) 541NBXT, please contact us.