FX Series Single SLC Loop Expansion Card for FX-1000 Intelligent FACP, 250 Device Addresses
Kidde Commercial

FX Series Single SLC Loop Expansion Card for FX-1000 Intelligent FACP, 250 Device Addresses

SKU KD-FX-SLC1

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The FX-SLC1 adds a full 250-device SLC loop to a Kidde FX-1000 intelligent fire alarm panel without replacing the main board. Plug the card into an open expansion slot, wire a Class A or Class B loop, and the panel auto-enrolls the new devices on power-up. For FX-64 panels, the same card replaces the standard 64-point loop controller.

Built for the fire alarm installer

Each SLC loop supports up to 250 intelligent addressable device addresses - 125 detectors and 125 modules. Wiring runs up to 20,000 feet per loop in Class B or Class A configurations, with built-in ground fault detection and up to 64 isolators per loop for fault segmentation. The card draws 24 VDC from the panel's main board at just 55 mA standby and 80 mA in alarm on a fully loaded loop.

Key features

  • 250 device addresses per loop: 125 detectors and 125 modules on a single SLC circuit
  • Class A or Class B wiring: choose the loop configuration that matches the job and AHJ requirements
  • Plug-in installation: mounts directly to the FX-1000 main circuit board - no additional enclosure needed
  • Up to 20,000 feet of loop wiring: covers large commercial buildings on a single loop run
  • 64 isolators per loop: segment the SLC for fault isolation without losing the entire loop
  • Low current draw: 55 mA standby, 80 mA alarm - minimal impact on panel power budget

System requirements

Requires a Kidde FX-1000 or FX-64 intelligent fire alarm control panel. On the FX-1000, the FX-SLC1 occupies one of two available expansion slots, expanding system capacity in 250-point increments up to 1,000 total device addresses. On the FX-64, it serves as a direct replacement for the standard loop controller (64 addresses).

Specifications

SKUKD-FX-SLC1
BrandKidde Commercial
Form factorSingle SLC loop controller card (plug-in expansion module)
CompatibilityKidde FX-1000, FX-64 intelligent fire alarm panels
Device addresses250 (FX-1000) / 64 (FX-64)
Wiring configurationClass A or Class B
Operating voltage24 VDC (from panel main board)
Operating currentStandby: 55 mA / Alarm: 80 mA (fully loaded loop)
Communication line voltageMax. 20.6 V peak-to-peak
Max loop resistance66 Ω
Max loop capacitance0.5 μF
Max loop wiring20,000 feet per loop
Circuit current0.5 A max
Terminal rating12 to 18 AWG (0.75 to 2.5 mm²)
Isolators64 maximum per loop (bases and modules combined)
Ground fault impedance0 to 5 kΩ
Operating temp32°F to 120°F (0°C to 49°C)
Operating humidity0 to 93% noncondensing at 90°F (32°C)

Documents and resources

FAQs

Does the FX-SLC1 work with the FX-64 panel?
Yes. On the FX-64, the FX-SLC1 replaces the standard 64-point loop controller card. It does not expand the FX-64 beyond its 64-device address limit.
How many loops can the FX-1000 support with expansion cards?
The FX-1000 has two expansion slots. With two FX-SLC1 cards (or one FX-SLC2 dual-loop card), the panel supports up to four total SLC loops and 1,000 device addresses.
Can I mix Class A and Class B wiring on different loops?
Yes. Each SLC loop is wired independently. You can run Class A on one loop and Class B on another based on AHJ requirements and installation layout.
What is the maximum wiring distance per SLC loop?
Each loop supports up to 20,000 feet of wiring. Maximum total loop resistance is 66 Ω and maximum total loop capacitance is 0.5 μF.
Does the FX-SLC1 require its own power supply?
No. The card draws power from the FX panel's main circuit board at 24 VDC. Standby current is 55 mA and alarm current is 80 mA on a fully loaded loop - minimal impact on the panel's power budget.
All FX Series