Guardian APS £0.00 Value & Reliability Easy wiring access and configuration are at the heart of the Guardian, the latest independent system from Campbell Company. This complete APS solution has a simple and flexible configuration, and delivers safety, simplicity, reliability, and cost-effectiveness at any intersection. Touchless actuation is now available with the new Guardian Wave. As a testament to its simplicity, the Guardian is a cabinet-free, completely independent pedestrian system. Encompassing everything agencies know and trust about the AGPS, the Guardian now offers greater sound quality and control, and still provides an ambient gain compensation locator tone, extended press options, vibro-tactile walk indications, and optional clearance phase indications; all adjustments and settings can be made at the pedestrian station via USB connection or Bluetooth.