T-400, California Controlled Atmospheric Tattle PRV Relief Indicator 4", Trade Supply, HVAC

The patented technology in the Tattle™ pressure relief vent indicator offers a simple yet innovative solution to quickly identify when a pressure relief valve (PRV) has been activated. It does this by providing either a visual indication or an optional electronic signal of what can be an intermittent event. The Tattle™ allows the system operator a quick, reliable, and cost effective solution to a problem that could go undetected for a significant amount of time.