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521NCRXT Interlogix Photoelectric 2-Wire Smoke Detector w/CleanMe Heat Sensor and Auxiliary Relay 85 - 33 VDC Smart Dual Fixed/Rate of Rise Heat Sensors Auxiliary Relay

Note: Interlogix is out of business. Many items are still obtainable, but availibility is changing rapidly and all items are no longer in production. We do have some select items in inventory and can also search our distribution partners for remaining stock. Purchasing Interlogix is only recommended for service parts, not for new systems.

SKU: 521NCRXT
  • Remote Maintenance (CleanMe) Reporting (Two-Wire models) and Built-in Drift Compensation Reduces False Alarms
  • Self-diagnostics Meets NFPA 72 Sensitivity Testing Requirements without the Need for External Meters
  • Replaceable Optical Chamber Makes Any Required Cleaning a Snap
  • Small, Low Profile Design Blends w/Any Environment
  • Large SEMS Screw Terminals Accept 12-18 AWG Wire
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MSRP Price: $89.36
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Product Details

ESL brand 500 Series conventional photoelectric smoke detectors come in a variety of models from the simplest to the most complex smoke and fire alarm applications. The 500 Series offers sounders in two- and four-wire applications, specifically to meet residential code requirements. For example, the 500 Series offers choices for optional auxiliary relays and isolated heat sensors for commercial applications, such as elevator recall or hotel/dorm rooms.


Specifications

  • Voltage
    • DIP switch 1 ON for standard 12 V operation (6.5 to 20 VDC), polarity sensitive
    • DIP switch 1 OFF for standard 24 V operation (8.5 to 33 VDC), polarity sensitive
  • Maximum ripple - 10% (Vp-p)
  • Typical average standby current - 70 μA (at 12 or 24 V)
  • Typical alarm current - Up to 60 mA maximum if not limited by control panel (at 12 or 24 V)
  • Aux. relay contacts - 2 A at 30 VDC; Form C
  • Alarm contacts - 500 mA at 36 VDC (resistive)
  • Photoel ctric sensitivi y - 3.1% +0.5% −1.0%
  • Operating temperature - 32 to 100°F (0 to 37°C)
  • Operating humidity - 0 to 95% noncondensing
  • RFI immunity - 20 V/m minimum; 0 to 1,000 MHz
  • Color - White head and base
  • Field wiring size - 12 to 24 AWG
  • Electrical boxes - Fits standard single-gang and 3-1/2 in. and 4 in. round ceiling electrical boxes
  • Detector packaging - 10 detectors per carton
  • Heat detector - Rate-of-rise 15°F/min and >105°F (8.3°C/min and >40.6°C)
  • UL two-wire compatibility identifiers - 521-528 DIP switch 1 ON = S09A, 521-528 DIP switch 1 OFF = S10A, S11A (RX models), 511-518 = S10A
  • Drift compensation adjustment - 1.0%/ft. max.
  • Detector head dimensions - 5.0 in. (12.7 cm) diameter; 2 in. (5.0 cm)deep
  • Mounting dimensions - 4.75 in. (12.1 cm) diameter; 0.3 in. (0.8 cm)deep
  • Reset time - 1 second minimum

521NCRXT Specifications PDF


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DWG - 800 Shames Drive , Westbury , NY 11590 , USA - 516-933-4900
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