ECS Series Manual — P/N LS10262-001FK-E:A 3/3/2021 29
Installing the FIK-50W Device Installation
Class B Speaker Configuration
Figure 4.14 illustrates how to wire speakers to the control panel using Class B supervision.
Figure 4.14 Class B Speaker Configuration
Class A Speaker Configuration
Figure 4.15 illustrates how to wire speakers to the control panel using Class A wiring.
Figure 4.15 Class A Speaker Configuration
4.3.5 VBUS Wiring
The VBUS is an analog voice bus that carries the recorded voice messages from the FIK-NVCM to the FIK-50W, or the voice messages gen-
erated from a system microphone to the FIK-50W. The maximum resistance on the VBUS is 20Ω.
Connect the VBUS from the FIK-NVCM as shown in Figure 4.16.
15kΩ EOL
UL Listed
Supervised
Power Limited
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