DiversiTech TT-120 Tattle-Tale Control Monitor Pack Of 3

The DiversiTech TT-120 Tattle-Tale Control Monitor is a diagnostic monitoring device designed to indicate control circuit activity in HVAC systems. It connects to low-voltage circuits and provides a visual alert when voltage is present, helping technicians quickly identify intermittent or hard-to-trace control issues. Commonly used on air conditioners, heat pumps, furnaces, and air handlers, it supports efficient troubleshooting and maintenance. This pack of three enhances service readiness, reduces diagnostic time, improves accuracy, and helps prevent unnecessary part replacement while supporting reliable system operation.