Guardian® Mini

Overview

The Guardian® Mini is a compact independent Accessible Pedestrian Signal (APS) designed to upgrade standard pedestrian push-button intersections to modern APS functionality. The unit installs using existing ADA push-button mounting holes, allowing intersections to be upgraded without additional drilling or major infrastructure changes.

The Guardian Mini operates as a 4-wire APS system, connecting the pedestrian station to a Signal Power Interface (SPI) installed inside the pedestrian signal head. This architecture allows the system to operate independently without requiring additional equipment in the traffic control cabinet.

The device provides audible and vibrotactile pedestrian indications that comply with accessibility standards and improve intersection usability for pedestrians with visual impairments.

The enclosure is constructed from 6061-T6 aluminum, injection-molded thermoplastic, and stainless steel hardware, providing a highly durable and vandal-resistant pedestrian station designed for long-term outdoor installations.

Key Features

• Independent 4-wire Accessible Pedestrian Signal
• Designed to retrofit existing 2-inch ADA pedestrian push button holes
• Plug-and-play installation with factory programming
• Compatible with 120VAC and 48VDC intersections
• PedConnex® Utility support via USB-C or Bluetooth® interface
• Configuration profiles can be saved and deployed across installations
• Quiet Signal Technology (QST) for directional audio
• Automatic Gain Control (AGC) for ambient noise adjustment
• Time-of-day audio volume control
• Low power consumption, suitable for RRFB installations
• Compatible with Audible Beacon Device (ABD) for destination beaconing
• Password-protected configuration utilities

System Components

A Guardian Mini installation includes two primary components.

Guardian Mini Pedestrian Station

The pedestrian station contains:

• Push button
• Vibrotactile directional arrow
• Speaker for audible indications
• Microcontroller
• Configuration interface

Signal Power Interface (SPI)

The Signal Power Interface (SPI) is installed inside the pedestrian signal head and converts Walk / Don’t Walk signals into low-voltage signals used to operate the Guardian Mini station.

Operating Specifications

• Operating Temperature: -34°C to +74°C (-30°F to +165°F)
• Operating Force: 3.0 lb maximum
• Switch Operating Life: Greater than 100 million operations
• Mean Time Between Failure (MTBF): 1,200,000 hours
• Maximum Audio Volume: 100 dB @ 1 meter

Standards and Compliance

The Guardian Mini is designed and tested to meet applicable accessibility and traffic control standards.

• MUTCD 2009 – Section 4E
• ADA Accessibility Requirements
• PROWAG Guidelines
• Transportation Association of Canada (TAC)

Environmental and electrical testing includes:

• NEMA TS2 Environmental Requirements
• NEMA TS4 Electrical Reliability
• NEMA 250 Type 4X Enclosure
• IEC 61000-4-4 and IEC 61000-4-5 Transient Suppression
• FCC Part 15 Class B Electronic Noise Compliance

Configuration and Programming

Guardian Mini stations are configured using the PedConnex® Utility, which allows technicians to modify system behavior and audio functionality.

Configuration options include:

• APS operational mode
• Locator tone volume
• Walk message volume
• Night mode audio profiles
• Automatic gain control settings
• Clearance interval audio modes
• Vibrotactile feedback settings
• Extended press timing
• Intersection and location identification

PedConnex is available for Windows, iOS, and Android devices, supporting both USB and optional Bluetooth connectivity.

Available Options

The Guardian Mini supports multiple configuration options at the time of order.

Faceplate Colors

• Textured Black
• Federal Yellow
• Gloss Black
• Unpainted / Natural
• Caltrans Yellow
• Custom Color (specified at order)

Screw Types

• Standard Phillips
• Pinned Torx
• Allen Head

Arrow Types

• Field Selectable
• Double Arrow
• No Arrow

Sign Film

• Engineering Grade
• Diamond Grade
• Decals
• Braille

Downloads

Guardian Mini Product Sheet

Guardian Mini Wiring Quick Guide

Guardian Mini Installation Manual

Guardian User Manual