Notifier Detector B501 Base

  • Function:
    • It’s a flangeless mounting base designed to securely hold compatible fire detectors.   
    • It provides the electrical connections necessary for the detector to communicate with the fire alarm control panel.   
  • Design:
    • It’s a 4-inch base, designed for a compact and unobtrusive installation.   
    • The “flangeless” design contributes to its clean, low-profile appearance.   
    • It’s typically made of durable plastic and comes in a white color, allowing it to blend into most ceiling environments.
  • Electrical:
    • It features screw terminals for power (+ and -) and remote annunciator connections.   
    • It’s designed for use in intelligent systems where communication occurs over the power lines.   
  • Compatibility:
    • It’s compatible with a range of System Sensor detectors, which are often used in Notifier fire alarm systems.
    • It is designed to be used within intelligent fire alarm systems.   
  • Installation:
    • It can be mounted on various electrical boxes, including 4-inch square and 3.5-inch octagonal boxes.
    • It also has a mechanical locking feature that can restrict the removal of the detector head.   

Key Technical Specifications:

  • Physical:
    • Base Diameter: 4.0″ (10.2 cm)   
    • Base Height: 0.74″ (18.8 mm)
    • Mounting: Compatible with 4″ square, 3.5″ octagonal, 50 mm, 60 mm, and 70 mm electrical boxes.
  • Electrical:
    • Operating Voltage: 15 to 32 VDC   
    • Standby Current: 150 µA maximum   
    • Wiring: Screw terminals for power (+ and -) and remote annunciator connections. Wire gauge compatibility: 12 to 24 AWG.   
  • Environmental:
    • Operating Temperature: Refer to the applicable sensor operating temperature range when using the base/sensor. General base temp range: -4°F to 150°F (-20°C to 66°C).
    • Humidity Range: 10% to 93% RH, non-condensing.   
  • Listings:
    • UL 268
    • ULC S529
    • FM Approved   
    • CSFM   

Key Features:

  • Designed for use in intelligent systems.   
  • Provides connections for power and remote annunciators.   
  • Allows for secure detector mounting.
  • UL/ULC Listed:
    • This means it has been tested and certified by Underwriters Laboratories (UL) and Underwriters Laboratories of Canada (ULC), indicating compliance with safety standards.   
  • FM Approved:
    • This signifies approval by FM Approvals, which focuses on property loss prevention.   
  • CSFM:
    • This indicates certification by the California State Fire Marshal, important for installations within California.