How do I install the wires for an iNX to a TraffiCalm RRFB?
Terminal Block Connections:
PWR (+) & GND (-): The iNX needs 10-24 VDC between PWR (power) and GND (ground) in order to power the button. This voltage must be present at all times for proper operation.
BUTTON (+/-): The iNX accepts 7-32 VDC across button terminals. When the PBS is powered and the physical button is pressed, the voltage will drop to ~0VDC. This is a contact closure connection that signals the RRFB controller to activate the warning lights.
There is no polarity requirement, the terminals accept either orientation.
LIGHTS (+/-): The iNX needs a voltage signal from the RRFB in order to play the warning message. The iNX accepts 7-32 VDC to the LIGHTS terminal. The voice message will not play without the button detecting this voltage. There should be no voltage (0 VDC) when the RRFB warning lights are inactive (not flashing).
There is no polarity requirement, the terminals accept either orientation.

iNX/iDX To TraffiCalm RRFB
Once wires are installed properly, check voltage across the 2 LIGHTS wires while pushing the button.
- If you get a constant voltage without fluctuations:
- iNX: Settings > LED Flash Behavior = Play Predefined Pattern - Rapid Flash
- If you get a fluctuating voltage:
- iNX: Settings > LED Flash Behavior = Track Ltsln (Track Lights Input)
![]() Image Source: https://trafficalmsupport.zohodesk.com/portal/en/kb/articles/flashing-sign-systems-installation-guide#Wiring_Diagrams |
iNX/iDX Terminal |
Wire Color |
TraffiCalm Connection |
Function |
GND |
Black |
RADAR BLK |
Battery ground |
PWR |
Red |
RADAR RED |
Provides +12VDC power to pushbutton |
BUTTON (non-polarized) |
White |
INPUT 1+ |
Button press creates a contact closure triggering the RRFB to start flashing |
BUTTON (non-polarized) |
Green |
INPUT 1- |
Input common |
LIGHTS (non-polarized) |
Blue |
FLASHER B+ (or FLASHER A+) |
Provides confirmation signal that beacons are flashing to iNX, triggering audio message |
LIGHTS (non-polarized) |
Brown |
FLASHER B- (or FLASHER A-) |
Flasher signal common |