General Description
System Sensor 400 Series photoelectronic detectors are specifically designed to meet the stringent performance requirements of industrial and commercial fire detection/alarm systems. The design of these detectors emphasizes ease of installation and field maintenance.
The 400 Series offer 6 different photoelectronic detectors with a variety of voltages, wiring configurations, and thermal options.
   
Features
• 12 or 24 volt operation
• Unique optical sensing chamber
• Removable cover and insect screen for easy
    cleaning
• Visible LED blinks in standby, latches on in
    alarm
• Sealed against dirt, insects, and back pressure
• Field sensitivity metering of detector to meet NFPA 72
    requirements
• Twist-on mounting bracket with tamper option
• SEMS screws for easy wiring
• 3-year warranty
• Optional built-in 135°F (57°C) heat sensor