FLM‑420‑NAC Signaling Device Interface Modules

FLM‑420‑NAC Signaling Device Interface Modules
  • Rotary switches for automatic or manual address setting
  • Control of signaling device line by pole reversal
  • Synchronized activation of all signaling devices connected to a LSN module via FLM‑420‑NAC Signaling Device Interface Module
  • Ten different output signals via LSN selectable
  • Maintains LSN loop functions in the event of wire interruption or short-circuit thanks to two integrated isolators
  • Available with surface-mounted housing or DIN rail adapter
  • Details
    Input voltage 15 V DC to 33 V DC
    Max. current consumption
    from LSN 6,06 mA (normal operation and alarm)
    from external power supply 15 mA (normal operation) + output current
    External power supply 20,4 V DC to 29 V DC
    Max. output current 3 A (during an alarm, from ext. power supply)
    EOL resistance 3.9 kΩ
    Display elements
    Red LED Alarm
    Green LED Normal operation
    LSN/Address setting 3 rotary switches for
    Mode LSN "classic" or LSN improved version
    Automatic or manual addressing
    Connections 12 threaded clamps
    Max. wire diameter for terminals 3.3 mm2 (12 AWG)
    Housing material
    Interface module PPO (Noryl)
    Surface-mount housing ABS/PC-Blend
    Housing color
    Interface module Off-white, similar to RAL 9002
    Surface-mount housing Signal white, RAL 9003
    FLM-420-NAC-S Approx. 126 x 126 x 71 mm(4.96 x 4.96 x 2.8 in.)
    FLM-420-NAC-D (with DIN rail adapter) Approx. 110 x 110 x 48 mm(4.33 x 4.33 x 1.89 in.)
    FLM-420-NAC-S Approx. 390 g (13.8 ounces)
    FLM-420-NAC-D (with DIN rail adapter) Approx. 150 g (5.3 ounces)
    Number of zones per signaling device interface module 1
    Output signals Steady BS 5839 March Time March Time 120 California Coded Synchronization protocol (Wheelock, Gentex)
    Permitted operating temperature -20 °C to 50 °C(-4 °F to 122 °F)
    Permitted storage temperature -25 °C to 80 °C(-13 °F to 176 °F)
    Permitted relative humidity < 96%
    Classes of equipment as per IEC 60950 Class III equipment
    Protection class as per IEC 60529
    FLM-420-NAC-S IP 54
    FLM-420-NAC-D IP 30




    LSN vds
  • Certificates (3)
    Title Type Language
    Declaration of Conformity PDF
    VdS PDF
  • Documents (5)

Product variants

FLM-420-NAC-S Interface module, notific. app., surface

with 1 supervised output line for conventional signaling devices, with surface-mounted housing

Commercial Type No.: FLM-420-NAC-S
Product No.: F.01U.508.715

FLM-420-NAC-D Interface module, notific. app., rail

with 1 supervised output line for conventional signaling devices, for installation on a DIN rail with adapter

Commercial Type No.: FLM-420-NAC-D
Product No.: F.01U.508.717