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Alert System Type
Smoke / Fire / Carbon Monoxide
Sensor Type
Smoke / Heat
Contact Closure / Relay
Ease of Installation
Intermediate (Installs < 60 minutes)
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Triple Protection Fire Alarm for Safety and Peace of Mind
Interlogix ELE-541 CXT Hardwired Smoke & Heat Detector
Interlogix ELE-541 CXT Hardwired Smoke & Heat Detector
Interlogix ELE-541 CXT Hardwired Smoke & Heat Detector
Item# 7497R
Price: Normally $54.99 
Hot Deal $47.96
Free shipping on orders over $175 - See Details


  • Four-wire design (two for power and two for alarm)
  • Smart dual fixed/rate of rise heats work with photo chamber to catch fires faster
  • 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

Essential Info

A quality smoke detector with an integrated fixed 135°F and rate-of-rise heat detector provides triple protection against fire. The detector is exclusively designed to be wired into a security system that has power failure backup. The Smart dual fixed/rate of rise heats work with photo chamber to catch fires faster and protect your family and property. This detector also includes built-in drift compensation reduces annoying false alarms. The National Fire Protection Association requires that you use an end-of-line (EOL) relay to supervise 4-wire smoke alarm sensors. We offer the following EOL sensor; Power Supervision Relay (#7505PSR) sold separately.


What's Included

  • 1x - Hardwired Smoke & Heat Detector - ELE-541 CXT
  • Specifications

    Manufacturer Interlogix
    Manufacturer Product No. ELE-541CXT / ESL-541NBXT
    VoltageFor standard 6/12 V operation (6 to 20 VDC), polarity sensitive for standard 12/24 V operation (8.5 – 33 VDC), polarity sensitive
    Maximum Ripple pk-pk (6/12/24V)10% (V pk-pk)
    Typical Average Standby Current70 uA
    Typical Alarm Current (6/12/24V)Up to 60 mA maximum if not limited by control panel
    Aux. Relay Contacts1A @ 30 VDC;From C
    Alarm Contacts500 mA @ 36 VDC (resistive)
    Photoelectric Sensitivity2.0% + 1.08 – 1.02
    Operating Temperature32°F to 100°F (0°C to 37°C)
    Operating Humidity Range0 to 95% non-condensing
    RFI Immunity20 V/m minimum;0-1000 MHz
    ColorWhite head and base
    Field Wiring Size12-24 AWG (16-22 AWG recommended)
    Electrical BoxesFits standard single gang and 3 ½ inch and 4 inch round ceiling electrical boxes
    Detector Packaging10 detectors per carton
    Heat Detector SpecificationsRate-of-Rise: 15°F/min and >105°F (8.3°C/min and >40.6°C)

    Fixed Threshold: 135°F (57.2°C)
    UL 2-Wire Compatibility IdentifiersS09A, S10A, S11A
    Drift Compensation Adjustment1.0%/feet maximum
    DimensionsDetector Head: 5.5 inches (14.0 centimeters) diameter;2 inches (5.0 centimeters) deep

    Mounting Dimensions: 5.25 inches (13.3 centimeters) diameter;0.3 inches (0.8 centimeters) deep
    Reset Time1 second minimum
    Manufacturer Warranty3-years


    22 Ratings
    5 star: 64%  (14)
    4 star: 18%  (4)
    3 star: 14%  (3)
    2 star: 0%  (0)
    1 star: 5%  (1)
    Average Customer Rating
    (22 customer ratings)
    Share your thoughts with other customers
    BRENT -- bakersfield, CA   4/23/2009
    Great product. Works as it says.
    Wellcraft19 -- kirkland, WA   8/9/2008
    Great product but in order to meet current NFPA code, it HAS to have an alarm that is also triggered when ANY dector in the house goes off. The alarm needs to alert any and all detectors, one in each bedroom, hallway, living room, etc. As long as people are aware of this limitation and install additional horns, this product will do the job - AND not require overkill 115V wiring like most products. No reason hard wired smoke detectors can not be powered by 12-24 VDC instead of the all too common 115V, requiring far to much installation.
    ERIK -- lynnwood, WA   6/6/2008
    doesn't have a local alarm. It only sounds an alarm via the central station.
    SCOTT -- monroe, CT   3/10/2007
    Although I received the wrong item at first I was very happy with the way the company worked with me to get the wrong one returned and the right one shipped.
    JORGE -- mayaguez, PR   11/15/2006
    Great product, works great with HAI Omni controllers
    NARUN -- lewisville, TX   4/24/2006
    ERIC E -- debary,   11/25/2004
    works good, geat for safty and well being
    FIRAS -- dubai, DXB, XX   10/15/2004
    great coverage, small in size, dual sensors, all my clients loved it, it saved us lots of hasstele to solve the bad look of multi sensors in the cieling near each other. The architects are happyier now.
    ALAN -- cary, NC   8/12/2004
    As described
    HAROLD -- jefferson, TX   8/9/2004
    MARTIN -- sandown, NH   2/25/2004
    I now have 11 of these in my house - they all work great!
    MICHAEL -- lindon, UT   12/18/2003
    Works great with my system. Better looking and smaller than the original ones installed.
    JOSEPH -- bridgetown,ST MICHAE, BB   10/22/2003
    very good product
    MICHAEL -- lindon, UT   10/20/2003
    I was going to use this to replace an ugly sensor I had. However another sensor died and this replaced it. It was cheaper than the alarm company said they could get them for.
    NEAL -- harpers ferry, WV   9/14/2003
    performs as specified


    Power Supervision Relay For Smoke And Co Sensors  3000 Series Wireless IR Motion Sensor     
    Power Supervision Relay For Smoke And Co Sensors  3000 Series Wireless IR Motion Sensor     

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