FX-T3T4 Temporal Pattern Generator for Detector Sounder Bases
Kidde Commercial

FX-T3T4 Temporal Pattern Generator for Detector Sounder Bases

SKU KD-FX-T3T4

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The FX-T3T4 lets a single riser of sounder bases play the correct tone for the event - the T3 fire pattern or the T4 CO pattern - instead of one generic alarm sound for every condition.

Built for the commercial fire installer

Uses two consecutive SLC addresses: address 1 drives Channel 1 (T3 fire pattern), address 2 drives Channel 2 (T4 CO pattern), with fire alarms always taking priority. The control panel handles synchronization and silencing commands, and the module synchronizes every sounder base on its riser to match. Only one FX-T3T4 is needed per T3T4 riser, and it ships as a sealed factory-assembled unit with no user-serviceable parts.

Key features

  • Separates T3 (fire) and T4 (CO) temporal patterns on compatible sounder bases
  • NFPA 72 / NFPA 720 compliant tone patterns
  • Fire alarm priority over CO alarm by default (US/Canada marketplace)
  • Bicolor status LED - green flashes normal, red flashes alarm/active
  • One module covers an entire T3T4 riser

System requirements

Compatible with KI-ABDT, KI-ABST, and KI-ABLT sounder bases only. Requires an FX-NAC for T3T4 riser circuit supervision (ordered separately). Mounts to a 4-inch square box, 1-1/2 in. deep. Note: in Canada, only the T3 pattern may be used.

Specifications

SKUKD-FX-T3T4
BrandKidde Commercial
Form factorAddressable temporal pattern generator (T3 fire / T4 CO)
Compatible sounder basesKI-ABDT, KI-ABST, KI-ABLT
Operating voltageRiser: 16-33 Vdc; SLC: 15.2-19.95 Vdc
CurrentStandby 60 µA, alarm TC3 380 µA, alarm TC4 550 µA
T3T4 riser output3.5A max, supervised and power-limited, Class B
Wire size12 to 18 AWG
Circuit styleSLC: Style 4 (Class B) or Style 6 (Class A)
Mounting4-inch square box, 1-1/2 in. deep
Required accessoryFX-NAC for riser circuit supervision (sold separately)

Documents and resources

FAQs

Can I use this to play a CO tone in Canada?
No. In Canada, only the T3 fire pattern may be used; T4 CO tone is a US-marketplace option only.
How many FX-T3T4 modules does a system need?
One per T3T4 riser - it synchronizes every compatible sounder base on that riser.
Which sounder bases work with this module?
KI-ABDT, KI-ABST, and KI-ABLT only.
What happens if both a fire and CO alarm occur at once?
The fire (T3) pattern takes priority over the CO (T4) pattern in the US and Canadian marketplace default configuration.
All FX Series