Phone Line Tester GB Modular Plug Jack Single Voltage with LED Color Display, Dead Service Troubleshoot Hook-Up Cable, Part # Gardner Bender GTT100
This product is no longer available for purchase.
Please check out our single line telephone hook-ups. Checks for: reversed line, presence of voltage on line, and dead line. Just plug the tester into standard telephone line jack and watch the LED indicator at the top, match the color of LED with the chart below. Cheaper than a service call!
Line Status LED Indicator Light:
Not Lit: Line Dead
Green: Line Okay
Amber: AC Voltage Present
Red: Reversed Line
Retail Price: $9.95
Our Discounted Price: $3.95