AP Sensing N4587A-R01


Fiber Optic Linear Heat Detection (LHD)

Availability: Please Call for Availability

Condition: New
Brand: AP Sensing
Status: Active
SKU: 131243
Manufacturer Part #: N4587A-R01
Secondary Part #: N4587A-R01


LHD Interrogator, Multimode (MM) Sensor System, Measurement Range 1 Km, DTS Web Configurator, 2X LAN, 2X USB, SD, 10X Relay.

Additional information

Weight 0.2 lbs

AP Sensing




Unit of Measurement

EA (Each)

Production Status



  • Longest certified range in the market (up to 16 km)
  • Up to 4 channels for all distance ranges
  • Fastest fire detection due to significantly improved measurement times
  • Simultaneous measurement with two differently optimized configurations for precise temperature monitoring and faster fire detection
  • Decades of engineering experience ensures MTBF of 35 years
  • State-of-the-art IT security standards
  • Rugged housing design for outdoor and heavy-duty applications
  • Extensive testing for shock, vibration and temperature stress
  • Fully integrated web server with simple configuration via browser
  • 2000 alarm zones configurable per channel
  • Automatic, one-click validation of compliance configuration settings
  • Up to 98 integrated relay contacts
  • Approved according to both EN 54-22 (VdS) and UL 521 (UL)

Introducing The New Standard for Fiber Optic Linear Heat Detection


AP Sensing - Brochure