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Signal Power Interface (SPI)

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Overview:

  • The Signal Power Interface (SPI) provides PedSafety’s Guardian line with power by converting
    the 120V in the pedestrian signal head to a safe 12V. “Walk” and “Don’t Walk” information is
    read by the SPI and sent to a Guardian unit.
  • The SPI can be paired with a PedSafety WiAPB (Wireless Accessible Pedestrian Button) to
    provide power to the button for a 0-wire WiAAPS system.
  • For intersections running off 48V, the SPI 48V is available and converts the 48V in the signal
    pedestrian head to 12V.