Signal Power Interface (SPI)

Product Overview:

The Signal Power Interface (SPI) plays a crucial role in ensuring the reliable power and operation of PedSafety products, including the Guardian®, Guardian® Wave, Guardian® Mini, WiAAPS®, WiAAPS® Wave, TLPI®, and Audible Beacon Device. It accomplishes this by efficiently converting the standard 120V power source within the pedestrian signal head into a safe and manageable 12V supply. The SPI’s primary function is to retrieve and transmit the walk and don’t walk information to the connected product, thereby contributing to enhanced pedestrian safety.

About the Product:

The input connections of our SPI present a robust and secure solution for pedestrian signal head wiring. These connections include 48 VDC or 89-134 VAC (depending on your SPI) fused and surge-protected inputs for ‘walk’, ‘don’t walk’, and AC neutral, ensuring reliable operation even in challenging conditions. On the output side, the SPI offers a straightforward connection to a Guardian® station terminal block with four wires, including power (+12VDC), – GND, S2 ‘walk’, and S1 ‘don’t walk’. Each SPI unit efficiently operates one push-button station, featuring redundant hardware and firmware safety interlocks for ultimate operational safety. Moreover, the SPI is designed for easy installation inside various types of pedestrian signal heads, providing a hassle-free setup. It boasts extensive transient protection and is encapsulated in UL94-V0-listed flame-retardant polyurethane, ensuring resilience against environmental elements.